diff --git a/paper.bib b/paper.bib
index 25775f63e..925ab6390 100644
--- a/paper.bib
+++ b/paper.bib
@@ -1,21 +1,20 @@
 @article{davies_computational_2016,
-	title = {Computational {Screening} of {All} {Stoichiometric} {Inorganic} {Materials}},
-	volume = {1},
-	issn = {24519294},
-	url = {http://www.cell.com/chem/abstract/S2451-9294(16)30155-3},
-	doi = {10.1016/j.chempr.2016.09.010},
-	abstract = {Forming a four-component compound from the first 103 elements of the periodic table results in more than 1012 combinations. Such a materials space is intractable to high-throughput experiment or first-principle computation. We introduce a framework to address this problem and quantify how many materials can exist. We apply principles of valency and electronegativity to filter chemically implausible compositions, which reduces the inorganic quaternary space to 1010 combinations. We demonstrate that estimates of band gaps and absolute electron energies can be made simply on the basis of the chemical composition and apply this to the search for new semiconducting materials to support the photoelectrochemical splitting of water. We show the applicability to predicting crystal structure by analogy with known compounds, including exploration of the phase space for ternary combinations that form a perovskite lattice. Computer screening reproduces known perovskite materials and predicts the feasibility of thousands more. Given the simplicity of the approach, large-scale searches can be performed on a single workstation.},
-	number = {4},
-	journal = {Chem},
-	author = {Davies, Daniel W. and Butler, Keith T. and Jackson, Adam J. and Morris, Andrew and Frost, Jarvist M. and Skelton, Jonathan M. and Walsh, Aron},
-	year = {2016},
-	keywords = {Perovskites, Data, Materials Design, Screening, Water splitting},
-	pages = {617--627}
+title = {Computational Screening of All Stoichiometric Inorganic Materials},
+volume = {1},
+issn = {24519294},
+url = {http://www.cell.com/chem/abstract/S2451-9294(16)30155-3},
+doi = {10.1016/j.chempr.2016.09.010},
+abstract = {Forming a four-component compound from the first 103 elements of the periodic table results in more than 1012 combinations. Such a materials space is intractable to high-throughput experiment or first-principle computation. We introduce a framework to address this problem and quantify how many materials can exist. We apply principles of valency and electronegativity to filter chemically implausible compositions, which reduces the inorganic quaternary space to 1010 combinations. We demonstrate that estimates of band gaps and absolute electron energies can be made simply on the basis of the chemical composition and apply this to the search for new semiconducting materials to support the photoelectrochemical splitting of water. We show the applicability to predicting crystal structure by analogy with known compounds, including exploration of the phase space for ternary combinations that form a perovskite lattice. Computer screening reproduces known perovskite materials and predicts the feasibility of thousands more. Given the simplicity of the approach, large-scale searches can be performed on a single workstation.},
+number = {4},
+journal = {Chem},
+author = {Davies, Daniel W. and Butler, Keith T. and Jackson, Adam J. and Morris, Andrew and Frost, Jarvist M. and Skelton, Jonathan M. and Walsh, Aron},
+year = {2016},
+pages = {617--627}
 }
 
 @article{pamplin1964,
 title = "A systematic method of deriving new semiconducting compounds by structural analogy",
-journal = "Journal of Physics and Chemistry of Solids",
+journal = "J. Phys. Chem. Solids",
 volume = "25",
 number = "7",
 pages = "675 - 684",
@@ -29,7 +28,7 @@ @article{pamplin1964
 
 @article{goodman1958,
 title = "The prediction of semiconducting properties in inorganic compounds",
-journal = "Journal of Physics and Chemistry of Solids",
+journal = "J. Phys. Chem. Solids",
 volume = "6",
 number = "4",
 pages = "305 - 314",
@@ -44,38 +43,28 @@ @article{goodman1958
 @article{gaultois2013,
 author = {Gaultois, Michael W. and Sparks, Taylor D. and Borg, Christopher K. H. and Seshadri, Ram and Bonificio, William D. and Clarke, David R.},
 title = {Data-Driven Review of Thermoelectric Materials: Performance and Resource Considerations},
-journal = {Chemistry of Materials},
+journal = {Chem. Mater.},
 volume = {25},
 number = {15},
 pages = {2911-2920},
 year = {2013},
 doi = {10.1021/cm400893e},
-
-URL = {
-        https://doi.org/10.1021/cm400893e
-},
-eprint = {
-        https://doi.org/10.1021/cm400893e}
-
+URL = {https://doi.org/10.1021/cm400893e},
+eprint = {https://doi.org/10.1021/cm400893e}
 }
 
 @article{pelatt2011,
 author = {Pelatt, Brian D. and Ravichandran, Ram and Wager, John F. and Keszler, Douglas A.},
 title = {Atomic Solid State Energy Scale},
-journal = {Journal of the American Chemical Society},
+journal = {J. Am. Chem. Soc.},
 volume = {133},
 number = {42},
 pages = {16852-16860},
 year = {2011},
 doi = {10.1021/ja204670s},
-    note ={PMID: 21861503},
-
-URL = {
-        https://doi.org/10.1021/ja204670s
-},
-eprint = {
-        https://doi.org/10.1021/ja204670s
-}
+note ={PMID: 21861503},
+URL = {https://doi.org/10.1021/ja204670s},
+eprint = {https://doi.org/10.1021/ja204670s}
 }
 
 @Article{davies2018,
@@ -86,7 +75,6 @@ @Article{davies2018
 volume  ="211",
 issue  ="0",
 pages  ="553-568",
-publisher  ="The Royal Society of Chemistry",
 doi  ="10.1039/C8FD00032H",
 url  ="http://dx.doi.org/10.1039/C8FD00032H",
 abstract  ="The likelihiood of an element to adopt a specific oxidation state in a solid{,} given a certain set of neighbours{,} might often be obvious to a trained chemist. However{,} encoding this information for use in high-throughput searches presents a significant challenge. We carry out a statistical analysis of the occurrence of oxidation states in 16 735 ordered{,} inorganic compounds and show that a large number of cations are only likely to exhibit certain oxidation states in combination with particular anions. We use this data to build a model that ascribes probabilities to the formation of hypothetical compounds{,} given the proposed oxidation states of their constituent species. The model is then used as part of a high-throughput materials design process{,} which significantly narrows down the vast compositional search space for new ternary metal halide compounds. Finally{,} we employ a machine learning analysis of existing compounds to suggest likely structures for a small subset of the candidate compositions. We predict two new compounds{,} MnZnBr4 and YSnF7{,} that are thermodynamically stable according to density functional theory{,} as well as four compounds{,} MnCdBr4{,} MnRu2Br8{,} ScZnF5 and ZnCoBr4{,} which lie within the window of metastability."
@@ -100,29 +88,27 @@ @Article{goldschmidt1929
 volume  ="25",
 issue  ="0",
 pages  ="253-283",
-publisher  ="The Royal Society of Chemistry",
 doi  ="10.1039/TF9292500253",
 url  ="http://dx.doi.org/10.1039/TF9292500253",
 abstract  =""}
 
 @article{nethercot1974,
-  title = {Prediction of Fermi Energies and Photoelectric Thresholds Based on Electronegativity Concepts},
-  author = {Nethercot, Arthur H.},
-  journal = {Phys. Rev. Lett.},
-  volume = {33},
-  issue = {18},
-  pages = {1088--1091},
-  numpages = {0},
-  year = {1974},
-  month = {Oct},
-  publisher = {American Physical Society},
-  doi = {10.1103/PhysRevLett.33.1088},
-  url = {https://link.aps.org/doi/10.1103/PhysRevLett.33.1088}
+title = {Prediction of Fermi Energies and Photoelectric Thresholds Based on Electronegativity Concepts},
+author = {Nethercot, Arthur H.},
+journal = {Phys. Rev. Lett.},
+volume = {33},
+issue = {18},
+pages = {1088--1091},
+numpages = {0},
+year = {1974},
+month = {Oct},
+doi = {10.1103/PhysRevLett.33.1088},
+url = {https://link.aps.org/doi/10.1103/PhysRevLett.33.1088}
 }
 
 @article{ward2018,
 title = "Matminer: An open source toolkit for materials data mining",
-journal = "Computational Materials Science",
+journal = "Comp. Mater. Sci.",
 volume = "152",
 pages = "60 - 69",
 year = "2018",
@@ -130,13 +116,12 @@ @article{ward2018
 doi = "https://doi.org/10.1016/j.commatsci.2018.05.018",
 url = "http://www.sciencedirect.com/science/article/pii/S0927025618303252",
 author = "Logan Ward and Alexander Dunn and Alireza Faghaninia and Nils E.R. Zimmermann and Saurabh Bajaj and Qi Wang and Joseph Montoya and Jiming Chen and Kyle Bystrom and Maxwell Dylla and Kyle Chard and Mark Asta and Kristin A. Persson and G. Jeffrey Snyder and Ian Foster and Anubhav Jain",
-keywords = "Data mining, Open source software, Machine learning, Materials informatics",
 abstract = "As materials data sets grow in size and scope, the role of data mining and statistical learning methods to analyze these materials data sets and build predictive models is becoming more important. This manuscript introduces matminer, an open-source, Python-based software platform to facilitate data-driven methods of analyzing and predicting materials properties. Matminer provides modules for retrieving large data sets from external databases such as the Materials Project, Citrination, Materials Data Facility, and Materials Platform for Data Science. It also provides implementations for an extensive library of feature extraction routines developed by the materials community, with 47 featurization classes that can generate thousands of individual descriptors and combine them into mathematical functions. Finally, matminer provides a visualization module for producing interactive, shareable plots. These functions are designed in a way that integrates closely with machine learning and data analysis packages already developed and in use by the Python data science community. We explain the structure and logic of matminer, provide a description of its various modules, and showcase several examples of how matminer can be used to collect data, reproduce data mining studies reported in the literature, and test new methodologies."
 }
 
 @article{ong2013,
 title = "Python Materials Genomics (pymatgen): A robust, open-source python library for materials analysis",
-journal = "Computational Materials Science",
+journal = "Comp. Mater. Sci.",
 volume = "68",
 pages = "314 - 319",
 year = "2013",
@@ -144,7 +129,6 @@ @article{ong2013
 doi = "https://doi.org/10.1016/j.commatsci.2012.10.028",
 url = "http://www.sciencedirect.com/science/article/pii/S0927025612006295",
 author = "Shyue Ping Ong and William Davidson Richards and Anubhav Jain and Geoffroy Hautier and Michael Kocher and Shreyas Cholia and Dan Gunter and Vincent L. Chevrier and Kristin A. Persson and Gerbrand Ceder",
-keywords = "Materials, Project, Design, Thermodynamics, High-throughput",
 abstract = "We present the Python Materials Genomics (pymatgen) library, a robust, open-source Python library for materials analysis. A key enabler in high-throughput computational materials science efforts is a robust set of software tools to perform initial setup for the calculations (e.g., generation of structures and necessary input files) and post-calculation analysis to derive useful material properties from raw calculated data. The pymatgen library aims to meet these needs by (1) defining core Python objects for materials data representation, (2) providing a well-tested set of structure and thermodynamic analyses relevant to many applications, and (3) establishing an open platform for researchers to collaboratively develop sophisticated analyses of materials data obtained both from first principles calculations and experiments. The pymatgen library also provides convenient tools to obtain useful materials data via the Materials Project’s REpresentational State Transfer (REST) Application Programming Interface (API). As an example, using pymatgen’s interface to the Materials Project’s RESTful API and phasediagram package, we demonstrate how the phase and electrochemical stability of a recently synthesized material, Li4SnS4, can be analyzed using a minimum of computing resources. We find that Li4SnS4 is a stable phase in the Li–Sn–S phase diagram (consistent with the fact that it can be synthesized), but the narrow range of lithium chemical potentials for which it is predicted to be stable would suggest that it is not intrinsically stable against typical electrodes used in lithium-ion batteries."
 }
 
@@ -170,7 +154,7 @@ @Article{oboyle2011
 and Vandermeersch, Tim
 and Hutchison, Geoffrey R.",
 title="Open Babel: An open chemical toolbox",
-journal="Journal of Cheminformatics",
+journal="J. Cheminf.",
 year="2011",
 month="Oct",
 day="07",
@@ -191,11 +175,11 @@ @article{ase-paper
 Peterson and Carsten Rostgaard and Jakob Schiøtz and Ole Schütt and Mikkel Strange and Kristian S Thygesen and Tejs
 Vegge and Lasse Vilhelmsen and Michael Walter and Zhenhua Zeng and Karsten W Jacobsen},
   title={The atomic simulation environment—a Python library for working with atoms},
-  journal={Journal of Physics: Condensed Matter},
+  journal={J. Condens. Matter Phys.},
   volume={29},
   number={27},
   pages={273002},
   url={http://stacks.iop.org/0953-8984/29/i=27/a=273002},
   year={2017},
   abstract={The atomic simulation environment (ASE) is a software package written in the Python programming language with the aim of setting up, steering, and analyzing atomistic simulations. In ASE, tasks are fully scripted in Python. The powerful syntax of Python combined with the NumPy array library make it possible to perform very complex simulation tasks. For example, a sequence of calculations may be performed with the use of a simple ‘for-loop’ construction. Calculations of energy, forces, stresses and other quantities are performed through interfaces to many external electronic structure codes or force fields using a uniform interface. On top of this calculator interface, ASE provides modules for performing many standard simulation tasks such as structure optimization, molecular dynamics, handling of constraints and performing nudged elastic band calculations.}
-}
+}
diff --git a/smact/__init__.py b/smact/__init__.py
index 1413e0490..7a8d22f8a 100644
--- a/smact/__init__.py
+++ b/smact/__init__.py
@@ -70,6 +70,8 @@ class Element:
 
         Element.oxidation_states_custom (list | None ): List of oxidation states that appear in the custom data file supplied (if any)
 
+        Element.oxidation_states_icsd24 (list): List of oxidation states that appear in the 2024 version of the ICSD
+
         Element.coord_envs (list): The allowed coordination environments for the ion
 
         Element.covalent_radius (float) : Covalent radius of the element
@@ -195,6 +197,10 @@ def __init__(self, symbol: str, oxi_states_custom_filepath: str | None = None):
                 "oxidation_states_wiki",
                 data_loader.lookup_element_oxidation_states_wiki(symbol),
             ),
+            (
+                "oxidation_states_icsd24",
+                data_loader.lookup_element_oxidation_states_icsd24(symbol),
+            ),
             ("dipol", dataset["dipol"]),
             ("pauling_eneg", dataset["el_neg"]),
             ("SSE", sse),
diff --git a/smact/data/HHIs.txt b/smact/data/hhi.txt
similarity index 100%
rename from smact/data/HHIs.txt
rename to smact/data/hhi.txt
diff --git a/smact/data/oxidation_states.txt b/smact/data/oxidation_states.txt
index 122f9ee09..4ff8add34 100644
--- a/smact/data/oxidation_states.txt
+++ b/smact/data/oxidation_states.txt
@@ -1,3 +1,7 @@
+#
+# Oxidation state set
+# Source: Original SMACT set manually compiled (2014)
+#
 H -1 +1
 He
 Li +1
diff --git a/smact/data/oxidation_states_SP.txt b/smact/data/oxidation_states_SP.txt
index 697bd41c1..4713e62dd 100644
--- a/smact/data/oxidation_states_SP.txt
+++ b/smact/data/oxidation_states_SP.txt
@@ -1,3 +1,7 @@
+#
+# Oxidation state set
+# Source: Pymatgen structure predictor (2017)
+#
 H 1
 He
 Li 1
diff --git a/smact/data/oxidation_states_icsd.txt b/smact/data/oxidation_states_icsd.txt
index f7fcca86c..b575d52e4 100644
--- a/smact/data/oxidation_states_icsd.txt
+++ b/smact/data/oxidation_states_icsd.txt
@@ -1,3 +1,7 @@
+#
+# Oxidation state set
+# Source: ICSD (2016)
+#
 H -1 1
 He
 Li 1
diff --git a/smact/data/oxidation_states_icsd24_common.txt b/smact/data/oxidation_states_icsd24_common.txt
new file mode 100644
index 000000000..4c2f90974
--- /dev/null
+++ b/smact/data/oxidation_states_icsd24_common.txt
@@ -0,0 +1,107 @@
+#
+# Oxidation state set
+# Source: ICSD (2024, V2), most common non-zero values
+#
+H 1
+He
+Li 1
+Be 2
+B 3
+C 4
+N -3
+O -2
+F -1
+Ne
+Na 1
+Mg 2
+Al 3
+Si 4
+P 5
+S -2
+Cl -1
+Ar
+K 1
+Ca 2
+Sc 3
+Ti 4
+V 5
+Cr 3
+Mn 2
+Fe 3
+Co 2
+Ni 2
+Cu 2
+Zn 2
+Ga 3
+Ge 4
+As 5
+Se -2
+Br -1
+Kr 2
+Rb 1
+Sr 2
+Y 3
+Zr 4
+Nb 5
+Mo 6
+Tc 7
+Ru 4
+Rh 3
+Pd 2
+Ag 1
+Cd 2
+In 3
+Sn 4
+Sb 3
+Te -2
+I -1
+Xe 6
+Cs 1
+Ba 2
+La 3
+Ce 3
+Pr 3
+Nd 3
+Pm 3
+Sm 3
+Eu 3
+Gd 3
+Tb 3
+Dy 3
+Ho 3
+Er 3
+Tm 3
+Yb 3
+Lu 3
+Hf 4
+Ta 5
+W 6
+Re 7
+Os 5
+Ir 4
+Pt 4
+Au 1
+Hg 2
+Tl 1
+Pb 2
+Bi 3
+Po 4
+At
+Rn
+Fr
+Ra 2
+Ac 3
+Th 4
+Pa 5
+U 6
+Np 6
+Pu 3
+Am 3
+Cm 3
+Bk 3
+Cf 3
+Es 3
+Fm
+Md
+No
+Lr
diff --git a/smact/data/oxidation_states_icsd24_counts.json b/smact/data/oxidation_states_icsd24_counts.json
new file mode 100644
index 000000000..38f217864
--- /dev/null
+++ b/smact/data/oxidation_states_icsd24_counts.json
@@ -0,0 +1,1856 @@
+[
+  { "element": "H", "oxidation_state": -9, "results_count": 0 },
+  { "element": "H", "oxidation_state": -8, "results_count": 0 },
+  { "element": "H", "oxidation_state": -7, "results_count": 0 },
+  { "element": "H", "oxidation_state": -6, "results_count": 0 },
+  { "element": "H", "oxidation_state": -5, "results_count": 0 },
+  { "element": "H", "oxidation_state": -4, "results_count": 0 },
+  { "element": "H", "oxidation_state": -3, "results_count": 0 },
+  { "element": "H", "oxidation_state": -2, "results_count": 0 },
+  { "element": "H", "oxidation_state": -1, "results_count": 3442 },
+  { "element": "H", "oxidation_state": 0, "results_count": 2738 },
+  { "element": "H", "oxidation_state": 1, "results_count": 34232 },
+  { "element": "H", "oxidation_state": 2, "results_count": 2 },
+  { "element": "H", "oxidation_state": 3, "results_count": 1 },
+  { "element": "H", "oxidation_state": 4, "results_count": 0 },
+  { "element": "H", "oxidation_state": 5, "results_count": 0 },
+  { "element": "H", "oxidation_state": 6, "results_count": 0 },
+  { "element": "H", "oxidation_state": 7, "results_count": 0 },
+  { "element": "H", "oxidation_state": 8, "results_count": 0 },
+  { "element": "He", "oxidation_state": -9, "results_count": 0 },
+  { "element": "He", "oxidation_state": -8, "results_count": 0 },
+  { "element": "He", "oxidation_state": -7, "results_count": 0 },
+  { "element": "He", "oxidation_state": -6, "results_count": 0 },
+  { "element": "He", "oxidation_state": -5, "results_count": 0 },
+  { "element": "He", "oxidation_state": -4, "results_count": 0 },
+  { "element": "He", "oxidation_state": -3, "results_count": 0 },
+  { "element": "He", "oxidation_state": -2, "results_count": 0 },
+  { "element": "He", "oxidation_state": -1, "results_count": 0 },
+  { "element": "He", "oxidation_state": 0, "results_count": 29 },
+  { "element": "He", "oxidation_state": 1, "results_count": 0 },
+  { "element": "He", "oxidation_state": 2, "results_count": 0 },
+  { "element": "He", "oxidation_state": 3, "results_count": 0 },
+  { "element": "He", "oxidation_state": 4, "results_count": 0 },
+  { "element": "He", "oxidation_state": 5, "results_count": 0 },
+  { "element": "He", "oxidation_state": 6, "results_count": 0 },
+  { "element": "He", "oxidation_state": 7, "results_count": 0 },
+  { "element": "He", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Li", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 0, "results_count": 1164 },
+  { "element": "Li", "oxidation_state": 1, "results_count": 10513 },
+  { "element": "Li", "oxidation_state": 2, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 3, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Li", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Be", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 0, "results_count": 376 },
+  { "element": "Be", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 2, "results_count": 1131 },
+  { "element": "Be", "oxidation_state": 3, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Be", "oxidation_state": 8, "results_count": 0 },
+  { "element": "B", "oxidation_state": -9, "results_count": 0 },
+  { "element": "B", "oxidation_state": -8, "results_count": 0 },
+  { "element": "B", "oxidation_state": -7, "results_count": 0 },
+  { "element": "B", "oxidation_state": -6, "results_count": 0 },
+  { "element": "B", "oxidation_state": -5, "results_count": 3 },
+  { "element": "B", "oxidation_state": -4, "results_count": 0 },
+  { "element": "B", "oxidation_state": -3, "results_count": 232 },
+  { "element": "B", "oxidation_state": -2, "results_count": 37 },
+  { "element": "B", "oxidation_state": -1, "results_count": 38 },
+  { "element": "B", "oxidation_state": 0, "results_count": 4547 },
+  { "element": "B", "oxidation_state": 1, "results_count": 35 },
+  { "element": "B", "oxidation_state": 2, "results_count": 28 },
+  { "element": "B", "oxidation_state": 3, "results_count": 5853 },
+  { "element": "B", "oxidation_state": 4, "results_count": 0 },
+  { "element": "B", "oxidation_state": 5, "results_count": 0 },
+  { "element": "B", "oxidation_state": 6, "results_count": 0 },
+  { "element": "B", "oxidation_state": 7, "results_count": 0 },
+  { "element": "B", "oxidation_state": 8, "results_count": 0 },
+  { "element": "C", "oxidation_state": -9, "results_count": 0 },
+  { "element": "C", "oxidation_state": -8, "results_count": 0 },
+  { "element": "C", "oxidation_state": -7, "results_count": 0 },
+  { "element": "C", "oxidation_state": -6, "results_count": 0 },
+  { "element": "C", "oxidation_state": -5, "results_count": 0 },
+  { "element": "C", "oxidation_state": -4, "results_count": 758 },
+  { "element": "C", "oxidation_state": -3, "results_count": 157 },
+  { "element": "C", "oxidation_state": -2, "results_count": 1233 },
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+  { "element": "Th", "oxidation_state": 3, "results_count": 64 },
+  { "element": "Th", "oxidation_state": 4, "results_count": 816 },
+  { "element": "Th", "oxidation_state": 5, "results_count": 4 },
+  { "element": "Th", "oxidation_state": 6, "results_count": 1 },
+  { "element": "Th", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Th", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": 0, "results_count": 21 },
+  { "element": "Pa", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": 2, "results_count": 1 },
+  { "element": "Pa", "oxidation_state": 3, "results_count": 3 },
+  { "element": "Pa", "oxidation_state": 4, "results_count": 13 },
+  { "element": "Pa", "oxidation_state": 5, "results_count": 35 },
+  { "element": "Pa", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Pa", "oxidation_state": 8, "results_count": 0 },
+  { "element": "U", "oxidation_state": -9, "results_count": 0 },
+  { "element": "U", "oxidation_state": -8, "results_count": 0 },
+  { "element": "U", "oxidation_state": -7, "results_count": 0 },
+  { "element": "U", "oxidation_state": -6, "results_count": 0 },
+  { "element": "U", "oxidation_state": -5, "results_count": 0 },
+  { "element": "U", "oxidation_state": -4, "results_count": 0 },
+  { "element": "U", "oxidation_state": -3, "results_count": 1 },
+  { "element": "U", "oxidation_state": -2, "results_count": 0 },
+  { "element": "U", "oxidation_state": -1, "results_count": 0 },
+  { "element": "U", "oxidation_state": 0, "results_count": 1892 },
+  { "element": "U", "oxidation_state": 1, "results_count": 1 },
+  { "element": "U", "oxidation_state": 2, "results_count": 74 },
+  { "element": "U", "oxidation_state": 3, "results_count": 280 },
+  { "element": "U", "oxidation_state": 4, "results_count": 944 },
+  { "element": "U", "oxidation_state": 5, "results_count": 135 },
+  { "element": "U", "oxidation_state": 6, "results_count": 1868 },
+  { "element": "U", "oxidation_state": 7, "results_count": 0 },
+  { "element": "U", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Np", "oxidation_state": -1, "results_count": 1 },
+  { "element": "Np", "oxidation_state": 0, "results_count": 165 },
+  { "element": "Np", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Np", "oxidation_state": 2, "results_count": 6 },
+  { "element": "Np", "oxidation_state": 3, "results_count": 41 },
+  { "element": "Np", "oxidation_state": 4, "results_count": 87 },
+  { "element": "Np", "oxidation_state": 5, "results_count": 99 },
+  { "element": "Np", "oxidation_state": 6, "results_count": 102 },
+  { "element": "Np", "oxidation_state": 7, "results_count": 24 },
+  { "element": "Np", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": 0, "results_count": 420 },
+  { "element": "Pu", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Pu", "oxidation_state": 2, "results_count": 15 },
+  { "element": "Pu", "oxidation_state": 3, "results_count": 83 },
+  { "element": "Pu", "oxidation_state": 4, "results_count": 71 },
+  { "element": "Pu", "oxidation_state": 5, "results_count": 5 },
+  { "element": "Pu", "oxidation_state": 6, "results_count": 33 },
+  { "element": "Pu", "oxidation_state": 7, "results_count": 12 },
+  { "element": "Pu", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Am", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Am", "oxidation_state": 0, "results_count": 64 },
+  { "element": "Am", "oxidation_state": 1, "results_count": 1 },
+  { "element": "Am", "oxidation_state": 2, "results_count": 6 },
+  { "element": "Am", "oxidation_state": 3, "results_count": 54 },
+  { "element": "Am", "oxidation_state": 4, "results_count": 11 },
+  { "element": "Am", "oxidation_state": 5, "results_count": 4 },
+  { "element": "Am", "oxidation_state": 6, "results_count": 3 },
+  { "element": "Am", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Am", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": 0, "results_count": 39 },
+  { "element": "Cm", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": 2, "results_count": 1 },
+  { "element": "Cm", "oxidation_state": 3, "results_count": 33 },
+  { "element": "Cm", "oxidation_state": 4, "results_count": 5 },
+  { "element": "Cm", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Cm", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": 0, "results_count": 16 },
+  { "element": "Bk", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": 2, "results_count": 1 },
+  { "element": "Bk", "oxidation_state": 3, "results_count": 10 },
+  { "element": "Bk", "oxidation_state": 4, "results_count": 4 },
+  { "element": "Bk", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Bk", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": 0, "results_count": 12 },
+  { "element": "Cf", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": 2, "results_count": 1 },
+  { "element": "Cf", "oxidation_state": 3, "results_count": 17 },
+  { "element": "Cf", "oxidation_state": 4, "results_count": 1 },
+  { "element": "Cf", "oxidation_state": 5, "results_count": 1 },
+  { "element": "Cf", "oxidation_state": 6, "results_count": 1 },
+  { "element": "Cf", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Cf", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Es", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 0, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 2, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 3, "results_count": 3 },
+  { "element": "Es", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Es", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 0, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 2, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 3, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Fm", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Md", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 0, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 2, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 3, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Md", "oxidation_state": 8, "results_count": 0 },
+  { "element": "No", "oxidation_state": -9, "results_count": 0 },
+  { "element": "No", "oxidation_state": -8, "results_count": 0 },
+  { "element": "No", "oxidation_state": -7, "results_count": 0 },
+  { "element": "No", "oxidation_state": -6, "results_count": 0 },
+  { "element": "No", "oxidation_state": -5, "results_count": 0 },
+  { "element": "No", "oxidation_state": -4, "results_count": 0 },
+  { "element": "No", "oxidation_state": -3, "results_count": 0 },
+  { "element": "No", "oxidation_state": -2, "results_count": 0 },
+  { "element": "No", "oxidation_state": -1, "results_count": 0 },
+  { "element": "No", "oxidation_state": 0, "results_count": 0 },
+  { "element": "No", "oxidation_state": 1, "results_count": 0 },
+  { "element": "No", "oxidation_state": 2, "results_count": 0 },
+  { "element": "No", "oxidation_state": 3, "results_count": 0 },
+  { "element": "No", "oxidation_state": 4, "results_count": 0 },
+  { "element": "No", "oxidation_state": 5, "results_count": 0 },
+  { "element": "No", "oxidation_state": 6, "results_count": 0 },
+  { "element": "No", "oxidation_state": 7, "results_count": 0 },
+  { "element": "No", "oxidation_state": 8, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -9, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -8, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -7, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -6, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -5, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -4, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -3, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -2, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": -1, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 0, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 1, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 2, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 3, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 4, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 5, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 6, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 7, "results_count": 0 },
+  { "element": "Lr", "oxidation_state": 8, "results_count": 0 }
+]
diff --git a/smact/data/oxidation_states_icsd24_filtered.txt b/smact/data/oxidation_states_icsd24_filtered.txt
new file mode 100644
index 000000000..0c6e6ff3f
--- /dev/null
+++ b/smact/data/oxidation_states_icsd24_filtered.txt
@@ -0,0 +1,107 @@
+#
+# Oxidation state set
+# Source: ICSD (2024, V2), filtered for > 5 reports
+#
+H -1 1
+He
+Li 1
+Be 2
+B -3 -2 -1 1 2 3
+C -4 -3 -2 -1 1 2 3 4
+N -5 -4 -3 -2 -1 1 2 3 4 5
+O -2 -1
+F -1
+Ne
+Na 1
+Mg 2
+Al 3
+Si -4 -3 -2 -1 2 3 4
+P -3 -2 -1 1 2 3 4 5
+S -2 -1 1 2 3 4 5 6
+Cl -1 1 3 5 7
+Ar
+K 1
+Ca 2
+Sc 1 2 3
+Ti 2 3 4
+V 1 2 3 4 5
+Cr 1 2 3 4 5 6
+Mn -1 1 2 3 4 5 6 7
+Fe 1 2 3 4 5 6
+Co -1 1 2 3 4
+Ni 1 2 3 4
+Cu 1 2 3
+Zn 2 3
+Ga -3 1 2 3 4
+Ge -4 -3 -2 -1 2 3 4
+As -3 -2 -1 1 2 3 4 5
+Se -2 -1 1 2 4 6
+Br -1 1 3 5 7
+Kr 2
+Rb 1
+Sr 2 4
+Y 1 2 3 4
+Zr 1 2 3 4
+Nb 1 2 3 4 5 6
+Mo -1 1 2 3 4 5 6
+Tc 1 2 3 4 5 7
+Ru 1 2 3 4 5 6 7
+Rh -1 1 2 3 4 5
+Pd 1 2 3 4
+Ag 1 2 3
+Cd 2
+In -3 -1 1 2 3
+Sn -4 -2 -1 2 3 4
+Sb -3 -2 -1 2 3 4 5
+Te -3 -2 -1 1 2 4 5 6
+I -1 1 3 5 7
+Xe 2 4 6 8
+Cs 1
+Ba 2
+La 1 2 3 4
+Ce 2 3 4
+Pr 2 3 4
+Nd 2 3 4
+Pm
+Sm 2 3
+Eu 2 3 4
+Gd 2 3 4
+Tb 2 3 4
+Dy 2 3 4
+Ho 2 3
+Er 2 3 4
+Tm 2 3
+Yb 2 3
+Lu 2 3
+Hf 2 3 4
+Ta 1 2 3 4 5
+W 2 3 4 5 6
+Re 1 2 3 4 5 6 7
+Os 1 2 3 4 5 6 7 8
+Ir 1 2 3 4 5 6
+Pt 2 3 4 5
+Au -1 1 2 3 5
+Hg 1 2
+Tl -1 1 2 3
+Pb -4 -1 2 3 4
+Bi -3 -2 -1 1 2 3 4 5
+Po 4
+At
+Rn
+Fr
+Ra
+Ac 3
+Th 2 3 4
+Pa 4 5
+U 2 3 4 5 6
+Np 2 3 4 5 6 7
+Pu 2 3 4 6 7
+Am 2 3 4
+Cm 3
+Bk 3
+Cf 3
+Es
+Fm
+Md
+No
+Lr
diff --git a/smact/data/oxidation_states_icsd24_raw.txt b/smact/data/oxidation_states_icsd24_raw.txt
new file mode 100644
index 000000000..bd9bddad8
--- /dev/null
+++ b/smact/data/oxidation_states_icsd24_raw.txt
@@ -0,0 +1,107 @@
+#
+# Oxidation state set
+# Source: ICSD (2024, V2)
+#
+H -1 1 2 3
+He
+Li 1
+Be 2
+B -5 -3 -2 -1 1 2 3
+C -4 -3 -2 -1 1 2 3 4
+N -5 -4 -3 -2 -1 1 2 3 4 5
+O -3 -2 -1 1 2
+F -1 1 2
+Ne
+Na -1 1
+Mg 2 3
+Al -3 1 2 3
+Si -4 -3 -2 -1 1 2 3 4
+P -4 -3 -2 -1 1 2 3 4 5 6
+S -3 -2 -1 1 2 3 4 5 6
+Cl -4 -1 1 2 3 4 5 7
+Ar
+K 1
+Ca -1 1 2
+Sc 1 2 3 5 6
+Ti 1 2 3 4 5 6
+V 1 2 3 4 5 6
+Cr 1 2 3 4 5 6
+Mn -1 1 2 3 4 5 6 7
+Fe -4 -2 -1 1 2 3 4 5 6
+Co -1 1 2 3 4 5
+Ni -2 1 2 3 4
+Cu 1 2 3 4
+Zn 1 2 3 4
+Ga -4 -3 -2 -1 1 2 3 4
+Ge -4 -3 -2 -1 1 2 3 4 5
+As -5 -3 -2 -1 1 2 3 4 5
+Se -2 -1 1 2 3 4 5 6 8
+Br -1 1 3 4 5 7
+Kr 2
+Rb -1 1 2
+Sr -2 2 4
+Y 1 2 3 4
+Zr 1 2 3 4 6
+Nb 1 2 3 4 5 6
+Mo -1 1 2 3 4 5 6 7
+Tc 1 2 3 4 5 6 7
+Ru -4 -3 -2 -1 1 2 3 4 5 6 7 8
+Rh -1 1 2 3 4 5 6
+Pd 1 2 3 4
+Ag 1 2 3 4
+Cd 1 2
+In -3 -2 -1 1 2 3 4
+Sn -4 -3 -2 -1 1 2 3 4
+Sb -3 -2 -1 1 2 3 4 5 6
+Te -3 -2 -1 1 2 3 4 5 6
+I -2 -1 1 3 5 7
+Xe 2 3 4 6 8
+Cs 1
+Ba 1 2
+La 1 2 3 4
+Ce -1 1 2 3 4
+Pr 1 2 3 4
+Nd 1 2 3 4 5
+Pm 3
+Sm 1 2 3 4
+Eu 1 2 3 4 5 6
+Gd 1 2 3 4
+Tb 1 2 3 4 5
+Dy 2 3 4 5 6
+Ho 2 3 4 5 6
+Er 2 3 4 5 6
+Tm 2 3 4
+Yb 2 3 4
+Lu 2 3 4
+Hf 1 2 3 4
+Ta 1 2 3 4 5 6 7
+W 1 2 3 4 5 6 7
+Re -1 1 2 3 4 5 6 7
+Os 1 2 3 4 5 6 7 8
+Ir -1 1 2 3 4 5 6
+Pt -2 1 2 3 4 5 6
+Au -1 1 2 3 4 5
+Hg 1 2 4
+Tl -2 -1 1 2 3 5
+Pb -4 -1 1 2 3 4
+Bi -3 -2 -1 1 2 3 4 5
+Po -2 2 4
+At
+Rn
+Fr
+Ra 2
+Ac 3
+Th 2 3 4 5 6
+Pa 2 3 4 5
+U -3 1 2 3 4 5 6
+Np -1 2 3 4 5 6 7
+Pu 2 3 4 5 6 7
+Am 1 2 3 4 5 6
+Cm 2 3 4
+Bk 2 3 4
+Cf 2 3 4 5 6
+Es 3
+Fm
+Md
+No
+Lr
diff --git a/smact/data/oxidation_states_pmg.txt b/smact/data/oxidation_states_pmg.txt
index ee82221be..36a42f711 100644
--- a/smact/data/oxidation_states_pmg.txt
+++ b/smact/data/oxidation_states_pmg.txt
@@ -1,3 +1,7 @@
+#
+# Oxidation state set
+# Source: Pymatgen (2017)
+#
 H -1 1
 He
 Li 1
diff --git a/smact/data/oxidation_states_wiki.txt b/smact/data/oxidation_states_wiki.txt
index 1da2e1528..615cee37d 100644
--- a/smact/data/oxidation_states_wiki.txt
+++ b/smact/data/oxidation_states_wiki.txt
@@ -1,3 +1,7 @@
+#
+# Oxidation state set
+# Source: Wikipedia (2022)
+#
 H -1 1
 He
 Li 0 1
diff --git a/smact/data/oxidationstates.data b/smact/data/oxidationstates.data
deleted file mode 100644
index ff0180d9e..000000000
--- a/smact/data/oxidationstates.data
+++ /dev/null
@@ -1,135 +0,0 @@
-H-1 -1
-He 0
-Li1 1
-Be2 2
-B3 3
-C-4 -4
-C-3 -3
-C-2 -2
-C-1 -1
-C1 1
-C2 2
-C3 3
-N-3 -3
-N3 3
-N5 5
-O-2 -2
-F-1 -1
-Ne 0
-Na1 1
-Mg2 2
-Al3 3
-Si-4 -4
-Si4 4
-P-3 -3
-P3 3
-P5 5
-S-2 -2
-S2 2
-S4 4
-S6 6
-Cl-1 -1
-Ar 0
-K1 1
-Ca2 2
-Sc3 3
-Ti4 4
-V5 5
-Cr3 3
-Cr6 6
-Mn2 2
-Mn4 4
-Mn7 7
-Fe2 2
-Fe3 3
-Fe6 6
-Co2 2
-Co3 3
-Ni2 2
-Cu2 2
-Zn2 2
-Ga3 3
-Ge-4 -4
-Ge2 2
-Ge4 4
-As-3 -3
-As3 3
-As5 5
-Se-2 -2
-Se2 2
-Se4 4
-Se6 6
-Br-1 -1
-Kr 0
-Rb1 1
-Sr2 2
-Y3 3
-Zr4 4
-Nb5 5
-Mo4 4
-Mo6 6
-Tc4 4
-Tc7 7
-Ru3 3
-Ru4 4
-Rh3 3
-Pd2 2
-Pd4 4
-Ag1 1
-Cd2 2
-In3 3
-Sn-4 -4
-Sn2 2
-Sn4 4
-Sb-3 -3
-Sb3 3
-Sb5 5
-Te-2 -2
-Te2 2
-Te4 4
-Te6 6
-I-1 -1
-Cs1 1
-Ba2 2
-La3 3
-Ce3 3
-Ce4 4
-Pr3 3
-Nd3 3
-Pm3 3
-Sm3 3
-Eu2 2
-Eu3 3
-Gd3 3
-Tb3 3
-Dy3 3
-Ho3 3
-Er3 3
-Tm3 3
-Yb3 3
-Lu3 3
-Hf4 4
-Ta5 5
-W4 4
-W6 6
-Re4 4
-Os4 4
-Ir3 3
-Ir4 4
-Pt2 2
-Pt3 3
-Pt4 4
-Au3 3
-Hg1 1
-Hg2 2
-Tl1 1
-Tl3 3
-Pb-4 -4
-Pb2 2
-Bi-3 -3
-Bi3 3
-Po-2 -2
-Po2 2
-Po4 4
-At-1 -1
-At1 1
diff --git a/smact/data_loader.py b/smact/data_loader.py
index c8fd8f4bc..f69e4c94a 100644
--- a/smact/data_loader.py
+++ b/smact/data_loader.py
@@ -298,6 +298,51 @@ def lookup_element_oxidation_states_custom(symbol, filepath, copy=True):
         return None
 
 
+_el_ox_states_icsd24 = None
+
+
+def lookup_element_oxidation_states_icsd24(symbol, copy=True):
+    """
+    Retrieve a list of known oxidation states for an element.
+    The oxidation states list used contains only those found
+    in the 2024 version of the ICSD (and has >=5 reports).
+
+    Args:
+        symbol (str) : the atomic symbol of the element to look up.
+        copy (Optional(bool)): if True (default), return a copy of the
+            oxidation-state list, rather than a reference to the cached
+            data -- only use copy=False in performance-sensitive code
+            and where the list will not be modified!
+
+    Returns:
+        list: List of known oxidation states for the element.
+
+            Returns None if oxidation states for the Element were not
+            found in the external data.
+    """
+    global _el_ox_states_icsd24
+
+    if _el_ox_states_icsd24 is None:
+        _el_ox_states_icsd24 = {}
+
+        for items in _get_data_rows(os.path.join(data_directory, "oxidation_states_icsd24_filtered.txt")):
+            _el_ox_states_icsd24[items[0]] = [int(oxidationState) for oxidationState in items[1:]]
+
+    if symbol in _el_ox_states_icsd24:
+        if copy:
+            # _el_ox_states_icsd24 stores lists -> if copy is set, make an implicit
+            # deep copy.  The elements of the lists are integers, which are
+            # "value types" in Python.
+
+            return list(_el_ox_states_icsd24[symbol])
+        else:
+            return _el_ox_states_icsd24[symbol]
+    else:
+        if _print_warnings:
+            print(f"WARNING: Oxidation states for element {symbol} " "not found.")
+        return None
+
+
 # Loader and cache for the element HHI scores.
 
 _element_hhis = None
@@ -324,7 +369,7 @@ def lookup_element_hhis(symbol):
     if _element_hhis is None:
         _element_hhis = {}
 
-        with open(os.path.join(data_directory, "HHIs.txt")) as file:
+        with open(os.path.join(data_directory, "hhi.txt")) as file:
             for line in file:
                 line = line.strip()
 
diff --git a/smact/structure_prediction/utilities.py b/smact/structure_prediction/utilities.py
index f7f68ae72..006cb611b 100644
--- a/smact/structure_prediction/utilities.py
+++ b/smact/structure_prediction/utilities.py
@@ -8,7 +8,7 @@
 from . import logger
 
 if TYPE_CHECKING:
-    import pymatgen
+    from pymatgen.core.structure import Structure
 
 
 def parse_spec(species: str) -> tuple[str, int]:
@@ -43,15 +43,16 @@ def parse_spec(species: str) -> tuple[str, int]:
     return ele, charge
 
 
-def unparse_spec(species: tuple[str, int]) -> str:
-    """
-    Unparse a species into a string representation.
+def unparse_spec(species: tuple[str, int], include_one: bool = True) -> str:
+    """Unparse a species into a string representation.
+
 
     The analogue of :func:`parse_spec`.
 
     Args:
-    ----
-        species (tuple): A tuple of (element, signed_charge).
+        species (tuple[str,int]): A tuple of (element, signed_charge).
+        include_one (bool): If True, include charge of 1 in the output if charge is 1 or -1.
+
 
     Returns:
     -------
@@ -65,7 +66,10 @@ def unparse_spec(species: tuple[str, int]) -> str:
         'O2-'
 
     """
-    return f"{species[0]}{abs(species[1])}{get_sign(species[1])}"
+    if include_one or abs(species[1]) != 1:
+        return f"{species[0]}{abs(species[1])}{get_sign(species[1])}"
+    else:
+        return f"{species[0]}{get_sign(species[1])}"
 
 
 def get_sign(charge: int) -> str:
@@ -91,9 +95,8 @@ def get_sign(charge: int) -> str:
 
 def convert_next_gen_mprest_data(
     doc,
-) -> dict[str, pymatgen.core.Structure | str | None]:
-    """
-    Converts the `MPDataDoc` object returned by a next-gen MP query to a dictionary.
+) -> dict[str, Structure | str | None]:
+    """Converts the `MPDataDoc` object returned by a next-gen MP query to a dictionary.
 
     Args:
     ----
diff --git a/smact/tests/files/test_icsd_oxidation_states_filter_1000.txt b/smact/tests/files/test_icsd_oxidation_states_filter_1000.txt
new file mode 100644
index 000000000..57ebddab0
--- /dev/null
+++ b/smact/tests/files/test_icsd_oxidation_states_filter_1000.txt
@@ -0,0 +1,109 @@
+#
+# Oxidation state set
+# Source: ICSD (2024), filtered for > 1000 reports
+#
+# Testing writing of ICSD 24 oxidation states list.
+#
+H -1 1
+He
+Li 1
+Be 2
+B 3
+C -2 2 3 4
+N -3 5
+O -2
+F -1
+Ne
+Na 1
+Mg 2
+Al 3
+Si 4
+P -3 5
+S -2 6
+Cl -1
+Ar
+K 1
+Ca 2
+Sc 3
+Ti 4
+V 3 4 5
+Cr 3
+Mn 2 3 4
+Fe 2 3
+Co 2 3
+Ni 2
+Cu 1 2
+Zn 2
+Ga 3
+Ge 4
+As -3 3 5
+Se -2 4
+Br -1
+Kr
+Rb 1
+Sr 2
+Y 3
+Zr 4
+Nb 5
+Mo 6
+Tc
+Ru
+Rh
+Pd
+Ag 1
+Cd 2
+In 3
+Sn 2 4
+Sb 3 5
+Te -2 4
+I -1
+Xe
+Cs 1
+Ba 2
+La 3
+Ce 3 4
+Pr 3
+Nd 3
+Pm
+Sm 3
+Eu 3
+Gd 3
+Tb 3
+Dy 3
+Ho 3
+Er 3
+Tm
+Yb 3
+Lu
+Hf
+Ta 5
+W 6
+Re
+Os
+Ir
+Pt
+Au
+Hg 2
+Tl 1
+Pb 2
+Bi 3
+Po
+At
+Rn
+Fr
+Ra
+Ac
+Th
+Pa
+U 6
+Np
+Pu
+Am
+Cm
+Bk
+Cf
+Es
+Fm
+Md
+No
+Lr
diff --git a/smact/tests/files/test_icsd_oxidation_states_filter_1000_w_0_ox_state.txt b/smact/tests/files/test_icsd_oxidation_states_filter_1000_w_0_ox_state.txt
new file mode 100644
index 000000000..9f9dde802
--- /dev/null
+++ b/smact/tests/files/test_icsd_oxidation_states_filter_1000_w_0_ox_state.txt
@@ -0,0 +1,111 @@
+#
+# Oxidation state set
+# Source: ICSD (2024), filtered for > 1000 reports
+#
+# Testing writing of ICSD 24 oxidation states list.
+#
+# Includes oxidation state 0
+#
+H -1 0 1
+He
+Li 0 1
+Be 2
+B 0 3
+C -2 0 2 3 4
+N -3 0 5
+O -2 0
+F -1
+Ne
+Na 1
+Mg 0 2
+Al 0 3
+Si 0 4
+P -3 0 5
+S -2 0 6
+Cl -1
+Ar
+K 1
+Ca 0 2
+Sc 0 3
+Ti 0 4
+V 0 3 4 5
+Cr 0 3
+Mn 0 2 3 4
+Fe 0 2 3
+Co 0 2 3
+Ni 0 2
+Cu 0 1 2
+Zn 0 2
+Ga 0 3
+Ge 0 4
+As -3 0 3 5
+Se -2 0 4
+Br -1
+Kr
+Rb 1
+Sr 0 2
+Y 0 3
+Zr 0 4
+Nb 0 5
+Mo 0 6
+Tc
+Ru 0
+Rh 0
+Pd 0
+Ag 0 1
+Cd 0 2
+In 0 3
+Sn 0 2 4
+Sb 0 3 5
+Te -2 0 4
+I -1
+Xe
+Cs 1
+Ba 0 2
+La 0 3
+Ce 0 3 4
+Pr 0 3
+Nd 0 3
+Pm
+Sm 0 3
+Eu 0 3
+Gd 0 3
+Tb 0 3
+Dy 0 3
+Ho 0 3
+Er 0 3
+Tm 0
+Yb 0 3
+Lu
+Hf 0
+Ta 0 5
+W 6
+Re
+Os
+Ir 0
+Pt 0
+Au 0
+Hg 2
+Tl 1
+Pb 2
+Bi 0 3
+Po
+At
+Rn
+Fr
+Ra
+Ac
+Th
+Pa
+U 0 6
+Np
+Pu
+Am
+Cm
+Bk
+Cf
+Es
+Fm
+Md
+No
+Lr
diff --git a/smact/tests/test_utils.py b/smact/tests/test_utils.py
index dc18f1f6e..c54a9081e 100644
--- a/smact/tests/test_utils.py
+++ b/smact/tests/test_utils.py
@@ -3,12 +3,14 @@
 import os
 import unittest
 
+import pandas as pd
 from pymatgen.core import Composition
 
 from smact import Element
 from smact.screening import smact_filter
 from smact.utils.composition import comp_maker, formula_maker, parse_formula
 from smact.utils.crystal_space import generate_composition_with_smact
+from smact.utils.oxidation import ICSD24OxStatesFilter
 
 
 class TestComposition(unittest.TestCase):
@@ -92,3 +94,61 @@ def test_convert_formula(self):
     @unittest.skipUnless(os.environ.get("MP_API_KEY"), "requires MP_API key to be set.")
     def test_download_compounds_with_mp_api(self):
         pass
+
+
+files_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "files")
+TEST_ICSD_OX_STATES = os.path.join(files_dir, "test_icsd_oxidation_states_filter_1000.txt")
+TEST_ICSD_OX_STATES_W_ZERO = os.path.join(files_dir, "test_icsd_oxidation_states_filter_1000_w_0_ox_state.txt")
+
+
+class OxidationStatesTest(unittest.TestCase):
+    def setUp(self):
+        self.ox_filter = ICSD24OxStatesFilter()
+        with open(TEST_ICSD_OX_STATES) as f:
+            self.test_ox_states = f.read()
+        with open(TEST_ICSD_OX_STATES_W_ZERO) as f:
+            self.test_ox_states_w_zero = f.read()
+
+    def test_oxidation_states_filter(self):
+        self.assertIsInstance(self.ox_filter.ox_states_df, pd.DataFrame)
+        threshold = 10
+        filtered_df = self.ox_filter.filter(threshold)
+
+        self.assertIsInstance(filtered_df, pd.DataFrame)
+        self.assertEqual(filtered_df.columns.tolist(), ["element", "oxidation_state"])
+        # self.assertEqual(filtered_df.loc[""])
+
+    def test_oxidation_states_write(self):
+        threshold = 1000
+        filename = "test_ox_states"
+        filename_w_zero = "test_ox_states_w_zero"
+        comment = "Testing writing of ICSD 24 oxidation states list."
+        self.ox_filter.write(filename, threshold, comment=comment)
+        self.ox_filter.write(filename_w_zero, threshold, include_zero=True, comment=comment)
+        self.assertTrue(os.path.exists(f"{filename}.txt"))
+        with open(f"{filename}.txt") as f:
+            self.assertEqual(f.read(), self.test_ox_states)
+
+        self.assertTrue(os.path.exists(f"{filename}_w_zero.txt"))
+        with open(f"{filename}_w_zero.txt") as f:
+            self.assertEqual(f.read(), self.test_ox_states_w_zero)
+        # Clean up
+        os.remove(f"{filename}.txt")
+        os.remove(f"{filename}_w_zero.txt")
+
+    def test_oxidation_states_filter_species_list(self):
+        for threshold, length in [(0, 490), (5, 358), (50, 227)]:
+            species_list = self.ox_filter.get_species_list(threshold)
+            self.assertIsInstance(species_list, list)
+            self.assertEqual(len(species_list), length)
+
+    def test_oxidation_states_filter_species_occurrences(self):
+        species_occurrences_df = self.ox_filter.get_species_occurrences_df()
+        self.assertIsInstance(species_occurrences_df, pd.DataFrame)
+        self.assertEqual(
+            species_occurrences_df.columns.tolist(),
+            ["species", "results_count"],
+        )
+        self.assertEqual(species_occurrences_df.shape, (490, 2))
+        self.assertEqual(species_occurrences_df.iloc[0]["species"], "O2-")
+        self.assertEqual(species_occurrences_df.iloc[0]["results_count"], 116910)
diff --git a/smact/utils/oxidation.py b/smact/utils/oxidation.py
new file mode 100644
index 000000000..09d285887
--- /dev/null
+++ b/smact/utils/oxidation.py
@@ -0,0 +1,154 @@
+"""Utility functions for handling oxidation states."""
+
+from __future__ import annotations
+
+import os
+from os import path
+
+import pandas as pd
+
+from smact import Element, data_directory, ordered_elements
+from smact.structure_prediction.utilities import unparse_spec
+
+
+class ICSD24OxStatesFilter:
+    """Class to handle filtering the ICSD 24 oxidation states list.
+
+    The ICSD 24 oxidation states list is a list of oxidation states for each element in the ICSD 24 database.
+
+    Attributes:
+        ox_states_df (pd.DataFrame): The ICSD 24 oxidation states list as a DataFrame.
+    """
+
+    def __init__(self):
+        """Initialise the ICSD 24 oxidation states list."""
+        self.ox_states_df = pd.read_json(path.join(data_directory, "oxidation_states_icsd24_counts.json"))
+
+    def filter(self, threshold: int, include_zero: bool = False):
+        """Filter the ICSD 24 oxidation states list by a threshold.
+
+        Args:
+            threshold (int): The threshold for filtering the oxidation states list.
+            include_zero (bool): Include oxidation state of zero in the filtered list. Default is False.
+
+        Returns:
+            pd.DataFrame: The filtered oxidation states list as a DataFrame.
+        """
+        if not include_zero:
+            filtered_df = self.ox_states_df[self.ox_states_df["oxidation_state"] != 0].reset_index(drop=True)
+        else:
+            filtered_df = self.ox_states_df
+        summary_df = (
+            filtered_df[(filtered_df["results_count"] > 0)]
+            .groupby("element")
+            .apply(self._filter_oxidation_states, threshold, include_groups=False)
+            .reset_index()
+        )
+        summary_df.columns = ["element", "oxidation_state"]
+        # Sort the elements by atomic number
+        summary_df["atomic_number"] = summary_df["element"].apply(lambda x: Element(x).number)
+        return summary_df.sort_values("atomic_number").drop(columns="atomic_number").reset_index(drop=True)
+
+    def get_species_list(
+        self,
+        threshold: int,
+        include_zero: bool = False,
+        include_one_oxidation_state: bool = False,
+    ):
+        """Get the filtered ICSD 24 oxidation states list as a list of species.
+
+        Args:
+            threshold (int): The threshold for filtering the oxidation states list.
+            include_zero (bool): Include oxidation state of zero in the filtered list. Default is False.
+            include_one_oxidation_state (bool): Include oxidation states +1 and -1 in the filtered list or include as + and - signs. Default is False.
+
+        Returns:
+            list: The filtered oxidation states list as a list of species.
+        """
+        filtered_df = self.filter(threshold, include_zero)
+        species_list = []
+        for _, row in filtered_df.iterrows():
+            ox_states = row["oxidation_state"].split(" ")
+            for ox_state in ox_states:
+                try:
+                    species_list.append(
+                        unparse_spec(
+                            (row["element"], int(ox_state)),
+                            include_one=include_one_oxidation_state,
+                        )
+                    )
+                except ValueError:
+                    continue
+        return species_list
+
+    def get_species_occurrences_df(
+        self,
+        include_one_oxidation_state: bool = False,
+    ):
+        """Get the ICSD 24 oxidation states list as a dataframe of species with their occurrences.
+
+        Args:
+            include_one_oxidation_state (bool): Include oxidation states +1 and -1 in the species or include as + and - signs. Default is False.
+
+        Returns:
+            dataframe: The species list as a dataframe of species with their occurrences.
+        """
+        species_occurrences_df = self.ox_states_df[
+            (self.ox_states_df.results_count > 0) & (self.ox_states_df.oxidation_state != 0)
+        ].reset_index(drop=True)
+        species_occurrences_df["species"] = species_occurrences_df.apply(
+            lambda x: unparse_spec(
+                (x["element"], x["oxidation_state"]),
+                include_one=include_one_oxidation_state,
+            ),
+            axis=1,
+        )
+        species_occurrences_df = species_occurrences_df[["species", "results_count"]]
+        return species_occurrences_df.sort_values("results_count", ascending=False).reset_index(drop=True)
+
+    def write(
+        self,
+        filename: str | os.PathLike,
+        threshold: int,
+        include_zero: bool = False,
+        comment: str | None = None,
+    ):
+        """Write the filtered ICSD 24 oxidation states list to a SMACT-compatible oxidation states txt file.
+
+        Args:
+            filename (str | os.PathLike): The filename to write the filtered oxidation states list to.
+            threshold (int): The threshold for filtering the oxidation states list.
+            include_zero (bool): Include oxidation state of zero in the filtered list. Default is False.
+            comment (str): A comment to include in the txt file. Default is None.
+        """
+        filtered_df = self.filter(threshold, include_zero)
+        # Convert the DataFrame to the require format
+        summary_dict = filtered_df.set_index("element")["oxidation_state"].to_dict()
+        all_elements = ordered_elements(1, 103)
+        final_summary = []
+
+        for element in all_elements:
+            oxidation_states = summary_dict.get(element, "")
+
+            if oxidation_states:
+                final_summary.append(f"{element} {oxidation_states}".strip())
+            else:
+                final_summary.append(element)
+
+        # Write the filtered oxidation states list to a txt file
+        if not filename.endswith(".txt"):
+            filename += ".txt"
+        with open(filename, "w") as f:
+            f.write(f"#\n# Oxidation state set\n# Source: ICSD (2024), filtered for > {threshold} reports\n#\n")
+            if comment:
+                f.write(f"# {comment}\n#\n")
+            if include_zero:
+                f.write("# Includes oxidation state 0\n#\n")
+            for line in final_summary:
+                f.write(line + "\n")
+
+    def _filter_oxidation_states(self, group: pd.DataFrame.groupby, threshold: int):
+        """Filter the oxidation states list by a threshold."""
+        filtered_states = group[group["results_count"] > threshold]
+
+        return " ".join(map(str, sorted(filtered_states["oxidation_state"])))