{ "@context": { "@vocab": "https://schema.org/", "chemfield": "https://chemfield.github.io/openchem/vocab#", "prov": "http://www.w3.org/ns/prov#", "dcterms": "http://purl.org/dc/terms/" }, "kind": "chemfield-kg-source-catalog", "schemaVersion": "chemfield-kg-source-catalog-v1", "id": "chemfield:kg-source-catalog:v1", "title": "ChemField external knowledge-graph & linked-data source catalog", "updatedAt": "2026-07-05", "canonicalField": "chemfield:kg-sources", "originTrail": { "status": "prepared_not_published", "namespace": "did:dkg:knitweb", "publishBlocker": "Publish to the DKG via the 5mart.ml laptop gateway once OriginTrail node credentials are present.", "localIdentityRule": "sha256 over stable JSON (sort_keys, compact) with cid/ual excluded; identical to the composition-web rule.", "sourceLinking": "Every source is linked in origintrailAsset.linked_sources with its own cid/ual.", "gateway": "https://www.5mart.ml/Slag/origintrail-gateway.php" }, "counts": { "sources": 16, "redistributable": 12, "referenceOnly": 4 }, "sources": [ { "id": "kg:materials-project", "type": "materials_database", "title": "Materials Project", "maintainer": "Lawrence Berkeley National Laboratory", "homepage": "https://next-gen.materialsproject.org/", "api": "https://api.materialsproject.org/", "identifierScheme": "mp-id", "license": "CC-BY-4.0", "licenseUrl": "https://creativecommons.org/licenses/by/4.0/", "distribution": "redistributable", "licenseExceptions": "GNoME-derived subset is CC-BY-NC-4.0 (non-commercial) and MUST be excluded from ChemField redistribution.", "relevance": "high", "accessStatus": "open_api", "usedFor": [ "crystal structures", "thermodynamics", "V/Cr Pourbaix (Eh-pH) speciation", "slag-relevant oxide stability" ], "chemfieldUse": "Primary turnkey machine-accessible source for V/Cr redox speciation via MPRester.get_pourbaix_entries(); build node-per-species field/1 graphs.", "note": "pymatgen + mp-api. Cite Materials Project per CC-BY.", "cid": "sha256:ca4dc26cf4d5e33d21c8947425435b193459ef0bac593f80d8d5d807c9712539", "ual": "did:dkg:knitweb/sha256-ca4dc26cf4d5e33d21c8947425435b193459ef0bac593f80d8d5d807c9712539" }, { "id": "kg:optimade", "type": "federated_api_standard", "title": "OPTIMADE federation", "maintainer": "OPTIMADE consortium", "homepage": "https://www.optimade.org/", "api": "https://www.optimade.org/providers-dashboard/", "identifierScheme": "provider-native + OPTIMADE id", "license": "per-provider (mostly open)", "licenseUrl": "https://www.optimade.org/", "distribution": "redistributable", "licenseExceptions": "Each federated provider carries its own licence; verify per provider before redistribution.", "relevance": "high", "accessStatus": "open_api", "usedFor": [ "federated inorganic crystal structures", "metal oxides", "slag phases" ], "chemfieldUse": "Single uniform REST entrypoint across AFLOW/OQMD/COD/JARVIS/NOMAD/Materials Cloud/Alexandria for inorganic structures.", "note": "26M+ structures across ~19 available providers; counts refreshed into snapshotStats.", "cid": "sha256:aec5e21aa16ec6cc59d8aced725998ea359a10a1804529d68986759334e10dd2", "ual": "did:dkg:knitweb/sha256-aec5e21aa16ec6cc59d8aced725998ea359a10a1804529d68986759334e10dd2" }, { "id": "kg:matkg", "type": "text_mined_knowledge_graph", "title": "MatKG / MatKG-2", "maintainer": "Venugopal & Olivetti (MIT)", "homepage": "https://github.com/superlouis/MatKG", "api": null, "identifierScheme": "MatKG entity id + Wikidata/DBpedia links", "license": "CC (open)", "licenseUrl": "https://www.nature.com/articles/s41597-024-03039-z", "distribution": "redistributable", "relevance": "high", "accessStatus": "download", "usedFor": [ "material-property-process relation network", "literature-mined triples" ], "chemfieldUse": "Filter triples on vanadium/chromium/slag/leaching to seed thematic 3D force-graph subgraphs. RDF/CSV -> field/1 JSON.", "note": "70k entities / 5.4M triples. DOI 10.1038/s41597-024-03039-z. Links to Wikidata/DBpedia/Materials Project.", "cid": "sha256:cb5cf1b2894d2b30e875290b922372bc1d0ab8ebc5c56195ad98677db2328739", "ual": "did:dkg:knitweb/sha256-cb5cf1b2894d2b30e875290b922372bc1d0ab8ebc5c56195ad98677db2328739" }, { "id": "kg:cod", "type": "crystal_structure_database", "title": "Crystallography Open Database (COD)", "maintainer": "COD advisory board", "homepage": "https://www.crystallography.net/cod/", "api": "https://www.crystallography.net/cod/optimade/", "identifierScheme": "COD id", "license": "CC0-1.0", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "distribution": "redistributable", "relevance": "high", "accessStatus": "open_api", "usedFor": [ "mineral and metal-oxide crystal structures", "slag mineralogy" ], "chemfieldUse": "CC0 mineral/oxide structures for ore & slag phases; 3D structure via Mol*. Also reachable through OPTIMADE.", "note": "500k+ entries; public domain.", "cid": "sha256:c2114ef61b168eb2921d1d44a43cd446dff2e8a44b1dcc70d38821a3255c7f69", "ual": "did:dkg:knitweb/sha256-c2114ef61b168eb2921d1d44a43cd446dff2e8a44b1dcc70d38821a3255c7f69" }, { "id": "kg:wikidata", "type": "encyclopedic_knowledge_graph", "title": "Wikidata", "maintainer": "Wikimedia Foundation", "homepage": "https://www.wikidata.org/", "api": "https://query.wikidata.org/sparql", "identifierScheme": "Q-id", "license": "CC0-1.0", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "distribution": "redistributable", "relevance": "medium-high", "accessStatus": "open_sparql", "usedFor": [ "chemical elements", "minerals", "compounds", "identifier crosswalk (CAS/InChIKey/PubChem CID)" ], "chemfieldUse": "SPARQL -> JSON backbone skeleton of elements/minerals/metals; owl:sameAs targets for field/1 nodes.", "note": "CC0. Identifier hub via P231/P235/P662.", "cid": "sha256:edc94c0331f5a84943687d9b3e20c77c79a409b4dc2a8e74edc56bad33d6d94c", "ual": "did:dkg:knitweb/sha256-edc94c0331f5a84943687d9b3e20c77c79a409b4dc2a8e74edc56bad33d6d94c" }, { "id": "kg:pubchemrdf", "type": "chemistry_rdf", "title": "PubChemRDF", "maintainer": "NIH / NCBI", "homepage": "https://pubchem.ncbi.nlm.nih.gov/docs/rdf", "api": "https://pubchem.ncbi.nlm.nih.gov/rest/rdf/", "identifierScheme": "PubChem CID + InChIKey", "license": "public-domain", "licenseUrl": "https://www.ncbi.nlm.nih.gov/home/about/policies/", "distribution": "redistributable", "relevance": "medium", "accessStatus": "download_and_rest", "usedFor": [ "compounds", "substances", "InChIKey resolution" ], "chemfieldUse": "InChIKey <-> CID resolution and sameAs links; ingest only relevant inorganic/aqueous-ion subsets (dataset is huge, ~80B triples).", "note": "US-Gov public domain. No official own SPARQL endpoint (use IDSM/ChemWebRDF).", "cid": "sha256:e3f4990a3a3c74d525f2099931d09b715b53fa8d608d99dc4a82b3d6d8084f3f", "ual": "did:dkg:knitweb/sha256-e3f4990a3a3c74d525f2099931d09b715b53fa8d608d99dc4a82b3d6d8084f3f" }, { "id": "kg:chebi", "type": "chemistry_ontology", "title": "ChEBI", "maintainer": "EMBL-EBI", "homepage": "https://www.ebi.ac.uk/chebi/", "api": "https://www.ebi.ac.uk/rdf/services/sparql", "identifierScheme": "CHEBI id", "license": "CC-BY-4.0", "licenseUrl": "https://creativecommons.org/licenses/by/4.0/", "distribution": "redistributable", "relevance": "medium", "accessStatus": "open_sparql", "usedFor": [ "chemical entity classification", "roles (is_a/has_role)" ], "chemfieldUse": "Typing/classification overlay for species; ontology graph loads directly into force-graph.", "note": "195k+ entries. Attribution required.", "cid": "sha256:feacc25c2d007e098413572dd46088d063df096300fd5961b17e7976bee0bb33", "ual": "did:dkg:knitweb/sha256-feacc25c2d007e098413572dd46088d063df096300fd5961b17e7976bee0bb33" }, { "id": "kg:rruff", "type": "mineral_spectral_database", "title": "RRUFF / Raman Open Database", "maintainer": "University of Arizona / COD", "homepage": "https://rruff.info/", "api": "https://raman-db.crystallography.net/", "identifierScheme": "RRUFF id", "license": "open (attribution)", "licenseUrl": "https://rruff.info/about/about_general.php", "distribution": "redistributable", "relevance": "medium-high", "accessStatus": "download", "usedFor": [ "mineral Raman/XRD/chemistry", "ore & slag minerals" ], "chemfieldUse": "High-quality mineral records with spectra & cell parameters for ore/slag mineralogy; ROD shares the COD model.", "note": "Smaller but curated.", "cid": "sha256:41a3a3ce8df183f1c008e78e15f7dc8683b0748f7e3d899568bab694ce0cc87b", "ual": "did:dkg:knitweb/sha256-41a3a3ce8df183f1c008e78e15f7dc8683b0748f7e3d899568bab694ce0cc87b" }, { "id": "kg:the-world-avatar", "type": "dynamic_knowledge_graph", "title": "The World Avatar (J-Park Simulator)", "maintainer": "CMCL / University of Cambridge (CoMo/CARES)", "homepage": "https://theworldavatar.io/", "api": null, "identifierScheme": "OntoSpecies/OntoKin IRIs", "license": "open", "licenseUrl": "https://github.com/cambridge-cares/TheWorldAvatar", "distribution": "reference_only", "relevance": "high", "accessStatus": "sparql_and_agents", "usedFor": [ "species (OntoSpecies)", "reaction kinetics (OntoKin)", "quantum chemistry (OntoCompChem)" ], "chemfieldUse": "Architecture inspiration for ChemField's field/1 layer (cross-domain ontologies + agents + content-linking); reference ontology patterns, do not vendor.", "note": "Most ambitious chemistry-KG initiative; verify OntoSpecies counts at the source.", "cid": "sha256:7a6cc8effadef3f2bbadf60824051ced977f4971e80b3e4500dd799df39c9d5f", "ual": "did:dkg:knitweb/sha256-7a6cc8effadef3f2bbadf60824051ced977f4971e80b3e4500dd799df39c9d5f" }, { "id": "kg:emmo", "type": "domain_ontology", "title": "EMMO + domain-electrochemistry + MSEO", "maintainer": "EMMC / EMMO authors", "homepage": "https://emmo-repo.github.io/", "api": "https://w3id.org/emmo", "identifierScheme": "EMMO IRI (w3id.org/emmo)", "license": "CC-BY-4.0", "licenseUrl": "https://creativecommons.org/licenses/by/4.0/", "distribution": "redistributable", "licenseExceptions": "MSEO is MIT-licensed; EMMO core is CC-BY-4.0.", "relevance": "high", "accessStatus": "download_owl", "usedFor": [ "upper ontology for species/phase/process/property", "electrochemistry domain terms" ], "chemfieldUse": "Semantic backbone to type field/1 terms consistently; EMMO v1.0.0 (Feb 2025) + domain-electrochemistry.", "note": "OWL/RDF. Reusable building blocks: OntoTrans, MarketPlace, OYSTER, CHAMEO.", "cid": "sha256:f1769351e1e3fd549193594c8e9dd6321198e5f36689ce3365c40ad356481cab", "ual": "did:dkg:knitweb/sha256-f1769351e1e3fd549193594c8e9dd6321198e5f36689ce3365c40ad356481cab" }, { "id": "kg:phreeqc", "type": "thermodynamic_speciation_database", "title": "PHREEQC thermodynamic databases", "maintainer": "U.S. Geological Survey", "homepage": "https://www.usgs.gov/software/phreeqc-version-3", "api": null, "identifierScheme": "species/phase name + log K", "license": "public-domain", "licenseUrl": "https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits", "distribution": "redistributable", "relevance": "high", "accessStatus": "download", "usedFor": [ "aqueous speciation", "leaching thermodynamics (log K)", "mineral/gas phases" ], "chemfieldUse": "Wrap .dat databases (llnl/minteq/wateq4f/pitzer/sit) as field/1 nodes: species, phases, reactions, log K. Tabular -> graph. Primary leaching-speciation source.", "note": "Public domain (USGS). R-package phreeqc. Activity models differ per DB.", "cid": "sha256:af9f54646d04150f8986e0ead50aecf4be72354c5f58b52d4ebbaf81e037323b", "ual": "did:dkg:knitweb/sha256-af9f54646d04150f8986e0ead50aecf4be72354c5f58b52d4ebbaf81e037323b" }, { "id": "kg:gems", "type": "thermodynamic_speciation_database", "title": "GEMS / GEM-Selektor (PSI)", "maintainer": "Paul Scherrer Institute", "homepage": "https://gems.web.psi.ch/", "api": "https://github.com/gemshub/GEMS3K", "identifierScheme": "DATACH/DATABR species", "license": "GPL-3.0 (software); data licences separate", "licenseUrl": "https://gems.web.psi.ch/", "distribution": "reference_only", "licenseExceptions": "GEMS3K solver is GPL-3.0: invoke as a separate process; do NOT link into Apache-2.0 code. Thermodata (PSI-Nagra TDB, Cemdata) carry their own licences.", "relevance": "high", "accessStatus": "download", "usedFor": [ "Gibbs-energy-minimisation speciation", "slag/leaching thermodynamics", "redox/sorption" ], "chemfieldUse": "Slag & leaching equilibrium thermodynamics; call GEMS3K/xGEMS out-of-process to avoid GPL contamination of Apache code.", "note": "GUI GPL-3.0 since v3.6.0. Python via xGEMS.", "cid": "sha256:e600eeab8c037f031ecf343616e874f4b03c2a0350b0a959b328f029b615f690", "ual": "did:dkg:knitweb/sha256-e600eeab8c037f031ecf343616e874f4b03c2a0350b0a959b328f029b615f690" }, { "id": "kg:usgs-mrdata", "type": "mineral_resource_database", "title": "USGS Mineral Resources Online Spatial Data (MRDATA)", "maintainer": "U.S. Geological Survey", "homepage": "https://mrdata.usgs.gov/", "api": "https://mrdata.usgs.gov/services/", "identifierScheme": "MRDS dep_id", "license": "public-domain", "licenseUrl": "https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits", "distribution": "redistributable", "relevance": "medium", "accessStatus": "download_and_wms", "usedFor": [ "mineral occurrences", "critical raw materials", "ore deposits" ], "chemfieldUse": "Build ore/deposit subgraphs (e.g. vanadium-bearing deposits) linking geology to composition; US-gov public domain.", "note": "Mostly geospatial/tabular; construct graph from records.", "cid": "sha256:44e1d8d9c4a723e5dd18806e7a28b4e1a83020a40beca05ee59a681c9d1c1dd5", "ual": "did:dkg:knitweb/sha256-44e1d8d9c4a723e5dd18806e7a28b4e1a83020a40beca05ee59a681c9d1c1dd5" }, { "id": "kg:hetionet", "type": "biomedical_knowledge_graph", "title": "Hetionet", "maintainer": "Himmelstein et al.", "homepage": "https://het.io/", "api": "https://neo4j.het.io/", "identifierScheme": "Hetionet node id", "license": "CC0-1.0", "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/", "distribution": "redistributable", "relevance": "low", "accessStatus": "download_and_neo4j", "usedFor": [ "compound nodes (exemplar)", "KG construction patterns" ], "chemfieldUse": "Reference exemplar for KG build & Neo4j->3D pipeline; low direct hydrometallurgy relevance.", "note": "47,031 nodes / 2.25M edges. CC0. DOI 10.7554/eLife.26726.", "cid": "sha256:d1ee72135a04f944f188ccf8b1b898b4ce1fa992bf15cf4e0753a464aeeae28e", "ual": "did:dkg:knitweb/sha256-d1ee72135a04f944f188ccf8b1b898b4ce1fa992bf15cf4e0753a464aeeae28e" }, { "id": "kg:factsage", "type": "thermochemical_database", "title": "FactSage / FACT (FToxid slag data)", "maintainer": "Thermfact / GTT-Technologies", "homepage": "https://www.factsage.com/", "api": null, "identifierScheme": "CALPHAD-assessed phases", "license": "commercial", "licenseUrl": "https://www.factsage.com/", "distribution": "reference_only", "relevance": "high", "accessStatus": "commercial", "usedFor": [ "slag-metal equilibria (FToxid)", "Eh-pH / Predom", "hydrometallurgy" ], "chemfieldUse": "Highest-quality slag thermochemistry BUT proprietary: cite and link only; never vendor or redistribute derived data.", "note": "Commercial (FactSage 8.4). Isolate behind licence.", "cid": "sha256:bbd645c24cde4afa7f43231fa9b64c91d3badf12903cc1bf5b9d92f520f8cf90", "ual": "did:dkg:knitweb/sha256-bbd645c24cde4afa7f43231fa9b64c91d3badf12903cc1bf5b9d92f520f8cf90" }, { "id": "kg:icsd", "type": "crystal_structure_database", "title": "Inorganic Crystal Structure Database (ICSD)", "maintainer": "FIZ Karlsruhe", "homepage": "https://icsd.products.fiz-karlsruhe.de/", "api": null, "identifierScheme": "ICSD collection code", "license": "commercial", "licenseUrl": "https://icsd.products.fiz-karlsruhe.de/", "distribution": "reference_only", "relevance": "medium", "accessStatus": "commercial", "usedFor": [ "comprehensive inorganic crystal structures" ], "chemfieldUse": "Most complete inorganic structures BUT licence excludes open reuse: reference only; prefer COD/OPTIMADE for redistributable data.", "note": "Commercial (FIZ Karlsruhe).", "cid": "sha256:e28b2b2869a07b3feba65a2f613b44f7f86253d6d54a4016758ad396eb6494e1", "ual": "did:dkg:knitweb/sha256-e28b2b2869a07b3feba65a2f613b44f7f86253d6d54a4016758ad396eb6494e1" } ], "visualizationStack": [ { "id": "viz:3d-force-graph", "title": "3d-force-graph (Vasturiano)", "license": "MIT", "role": "primary_open_3d_renderer", "url": "https://github.com/vasturiano/3d-force-graph", "reads": "JSON {nodes,links}", "note": "MVP start; ngraph engine for large graphs; VR/AR bindings." }, { "id": "viz:pygraphistry", "title": "Graphistry / PyGraphistry", "license": "BSD (client)", "role": "gpu_scale", "url": "https://github.com/graphistry/pygraphistry", "reads": "dataframes/CSV", "note": "GPU; UMAP; scale beyond ~50k edges." }, { "id": "viz:graphxr", "title": "Kineviz GraphXR", "license": "commercial (free tier)", "role": "vr_neo4j", "url": "https://www.kineviz.com/graphxr", "reads": "Neo4j/CSV/JSON/API", "note": "Strongest commercial 3D/VR graph tool." }, { "id": "viz:molstar", "title": "Mol* / NGL", "license": "MIT", "role": "molecular_structure_3d", "url": "https://molstar.org/", "reads": "PDB/mmCIF/SDF", "note": "3D molecular structures (NOT knowledge-graph viz); complementary." }, { "id": "viz:pykeen", "title": "PyKEEN + Embedding Projector", "license": "MIT", "role": "embedding_3d", "url": "https://github.com/pykeen/pykeen", "reads": "triples", "note": "KG embeddings (RotatE) -> UMAP/t-SNE 3D for V/Cr similarity." } ], "snapshotStats": {}, "@graph": [ { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:materials-project", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:hasLicense", "object": "CC-BY-4.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:hasAccessStatus", "object": "open_api", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:providesData", "object": "crystal structures", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:providesData", "object": "thermodynamics", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:providesData", "object": "V/Cr Pourbaix (Eh-pH) speciation", "type": "Dataset", "weight": 1 }, { "subject": "kg:materials-project", "predicate": "chemfield:providesData", "object": "slag-relevant oxide stability", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:optimade", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:hasLicense", "object": "per-provider (mostly open)", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:hasAccessStatus", "object": "open_api", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:providesData", "object": "federated inorganic crystal structures", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:providesData", "object": "metal oxides", "type": "Dataset", "weight": 1 }, { "subject": "kg:optimade", "predicate": "chemfield:providesData", "object": "slag phases", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:matkg", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:hasLicense", "object": "CC (open)", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:hasAccessStatus", "object": "download", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:providesData", "object": "material-property-process relation network", "type": "Dataset", "weight": 1 }, { "subject": "kg:matkg", "predicate": "chemfield:providesData", "object": "literature-mined triples", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:cod", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:hasLicense", "object": "CC0-1.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:hasAccessStatus", "object": "open_api", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:providesData", "object": "mineral and metal-oxide crystal structures", "type": "Dataset", "weight": 1 }, { "subject": "kg:cod", "predicate": "chemfield:providesData", "object": "slag mineralogy", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:wikidata", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:hasLicense", "object": "CC0-1.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:hasAccessStatus", "object": "open_sparql", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:hasRelevance", "object": "medium-high", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:providesData", "object": "chemical elements", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:providesData", "object": "minerals", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:providesData", "object": "compounds", "type": "Dataset", "weight": 1 }, { "subject": "kg:wikidata", "predicate": "chemfield:providesData", "object": "identifier crosswalk (CAS/InChIKey/PubChem CID)", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:pubchemrdf", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:hasLicense", "object": "public-domain", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:hasAccessStatus", "object": "download_and_rest", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:hasRelevance", "object": "medium", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:providesData", "object": "compounds", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:providesData", "object": "substances", "type": "Dataset", "weight": 1 }, { "subject": "kg:pubchemrdf", "predicate": "chemfield:providesData", "object": "InChIKey resolution", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:chebi", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:hasLicense", "object": "CC-BY-4.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:hasAccessStatus", "object": "open_sparql", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:hasRelevance", "object": "medium", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:providesData", "object": "chemical entity classification", "type": "Dataset", "weight": 1 }, { "subject": "kg:chebi", "predicate": "chemfield:providesData", "object": "roles (is_a/has_role)", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:rruff", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:hasLicense", "object": "open (attribution)", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:hasAccessStatus", "object": "download", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:hasRelevance", "object": "medium-high", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:providesData", "object": "mineral Raman/XRD/chemistry", "type": "Dataset", "weight": 1 }, { "subject": "kg:rruff", "predicate": "chemfield:providesData", "object": "ore & slag minerals", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:the-world-avatar", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:hasLicense", "object": "open", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:hasAccessStatus", "object": "sparql_and_agents", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:hasDistribution", "object": "reference_only", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:providesData", "object": "species (OntoSpecies)", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:providesData", "object": "reaction kinetics (OntoKin)", "type": "Dataset", "weight": 1 }, { "subject": "kg:the-world-avatar", "predicate": "chemfield:providesData", "object": "quantum chemistry (OntoCompChem)", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:emmo", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:hasLicense", "object": "CC-BY-4.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:hasAccessStatus", "object": "download_owl", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:providesData", "object": "upper ontology for species/phase/process/property", "type": "Dataset", "weight": 1 }, { "subject": "kg:emmo", "predicate": "chemfield:providesData", "object": "electrochemistry domain terms", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:phreeqc", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:hasLicense", "object": "public-domain", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:hasAccessStatus", "object": "download", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:providesData", "object": "aqueous speciation", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:providesData", "object": "leaching thermodynamics (log K)", "type": "Dataset", "weight": 1 }, { "subject": "kg:phreeqc", "predicate": "chemfield:providesData", "object": "mineral/gas phases", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:gems", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:hasLicense", "object": "GPL-3.0 (software); data licences separate", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:hasAccessStatus", "object": "download", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:hasDistribution", "object": "reference_only", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:providesData", "object": "Gibbs-energy-minimisation speciation", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:providesData", "object": "slag/leaching thermodynamics", "type": "Dataset", "weight": 1 }, { "subject": "kg:gems", "predicate": "chemfield:providesData", "object": "redox/sorption", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:usgs-mrdata", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:hasLicense", "object": "public-domain", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:hasAccessStatus", "object": "download_and_wms", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:hasRelevance", "object": "medium", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:providesData", "object": "mineral occurrences", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:providesData", "object": "critical raw materials", "type": "Dataset", "weight": 1 }, { "subject": "kg:usgs-mrdata", "predicate": "chemfield:providesData", "object": "ore deposits", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:hetionet", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:hasLicense", "object": "CC0-1.0", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:hasAccessStatus", "object": "download_and_neo4j", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:hasDistribution", "object": "redistributable", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:hasRelevance", "object": "low", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:providesData", "object": "compound nodes (exemplar)", "type": "Dataset", "weight": 1 }, { "subject": "kg:hetionet", "predicate": "chemfield:providesData", "object": "KG construction patterns", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:factsage", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:hasLicense", "object": "commercial", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:hasAccessStatus", "object": "commercial", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:hasDistribution", "object": "reference_only", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:hasRelevance", "object": "high", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:providesData", "object": "slag-metal equilibria (FToxid)", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:providesData", "object": "Eh-pH / Predom", "type": "Dataset", "weight": 1 }, { "subject": "kg:factsage", "predicate": "chemfield:providesData", "object": "hydrometallurgy", "type": "Dataset", "weight": 1 }, { "subject": "chemfield:kg-source-catalog:v1", "predicate": "chemfield:hasSource", "object": "kg:icsd", "type": "Dataset", "weight": 1 }, { "subject": "kg:icsd", "predicate": "chemfield:hasLicense", "object": "commercial", "type": "Dataset", "weight": 1 }, { "subject": "kg:icsd", "predicate": "chemfield:hasAccessStatus", "object": "commercial", "type": "Dataset", "weight": 1 }, { "subject": "kg:icsd", "predicate": "chemfield:hasDistribution", "object": "reference_only", "type": "Dataset", "weight": 1 }, { "subject": "kg:icsd", "predicate": "chemfield:hasRelevance", "object": "medium", "type": "Dataset", "weight": 1 }, { "subject": "kg:icsd", "predicate": "chemfield:providesData", "object": "comprehensive inorganic crystal structures", "type": "Dataset", "weight": 1 } ], "origintrailAsset": { "origintrail_id": "chemfield:kg-source-catalog:v1", "originator": "ChemField OpenChem", "namespace": "did:dkg:knitweb", "assertion": "Curated catalog of external chemical knowledge-graph / linked-data sources for ChemField. Each source carries a stable cid/ual; redistributable sources may seed field/1 graphs, reference_only sources are cited but never vendored.", "redistributableSourceIds": [ "kg:materials-project", "kg:optimade", "kg:matkg", "kg:cod", "kg:wikidata", "kg:pubchemrdf", "kg:chebi", "kg:rruff", "kg:emmo", "kg:phreeqc", "kg:usgs-mrdata", "kg:hetionet" ], "referenceOnlySourceIds": [ "kg:the-world-avatar", "kg:gems", "kg:factsage", "kg:icsd" ], "linked_sources": [ { "id": "kg:materials-project", "type": "materials_database", "title": "Materials Project", "url": "https://api.materialsproject.org/", "homepage": "https://next-gen.materialsproject.org/", "maintainer": "Lawrence Berkeley National Laboratory", "license": "CC-BY-4.0", "distribution": "redistributable", "cid": "sha256:ca4dc26cf4d5e33d21c8947425435b193459ef0bac593f80d8d5d807c9712539", "ual": "did:dkg:knitweb/sha256-ca4dc26cf4d5e33d21c8947425435b193459ef0bac593f80d8d5d807c9712539" }, { "id": "kg:optimade", "type": "federated_api_standard", "title": "OPTIMADE federation", "url": "https://www.optimade.org/providers-dashboard/", "homepage": "https://www.optimade.org/", "maintainer": "OPTIMADE consortium", "license": "per-provider (mostly open)", "distribution": "redistributable", "cid": "sha256:aec5e21aa16ec6cc59d8aced725998ea359a10a1804529d68986759334e10dd2", "ual": "did:dkg:knitweb/sha256-aec5e21aa16ec6cc59d8aced725998ea359a10a1804529d68986759334e10dd2" }, { "id": "kg:matkg", "type": "text_mined_knowledge_graph", "title": "MatKG / MatKG-2", "url": "https://github.com/superlouis/MatKG", "homepage": "https://github.com/superlouis/MatKG", "maintainer": "Venugopal & Olivetti (MIT)", "license": "CC (open)", "distribution": "redistributable", "cid": "sha256:cb5cf1b2894d2b30e875290b922372bc1d0ab8ebc5c56195ad98677db2328739", "ual": "did:dkg:knitweb/sha256-cb5cf1b2894d2b30e875290b922372bc1d0ab8ebc5c56195ad98677db2328739" }, { "id": "kg:cod", "type": "crystal_structure_database", "title": "Crystallography Open Database (COD)", "url": "https://www.crystallography.net/cod/optimade/", "homepage": "https://www.crystallography.net/cod/", "maintainer": "COD advisory board", "license": "CC0-1.0", "distribution": "redistributable", "cid": "sha256:c2114ef61b168eb2921d1d44a43cd446dff2e8a44b1dcc70d38821a3255c7f69", "ual": "did:dkg:knitweb/sha256-c2114ef61b168eb2921d1d44a43cd446dff2e8a44b1dcc70d38821a3255c7f69" }, { "id": "kg:wikidata", "type": "encyclopedic_knowledge_graph", "title": "Wikidata", "url": "https://query.wikidata.org/sparql", "homepage": "https://www.wikidata.org/", "maintainer": "Wikimedia Foundation", "license": "CC0-1.0", "distribution": "redistributable", "cid": "sha256:edc94c0331f5a84943687d9b3e20c77c79a409b4dc2a8e74edc56bad33d6d94c", "ual": "did:dkg:knitweb/sha256-edc94c0331f5a84943687d9b3e20c77c79a409b4dc2a8e74edc56bad33d6d94c" }, { "id": "kg:pubchemrdf", "type": "chemistry_rdf", "title": "PubChemRDF", "url": "https://pubchem.ncbi.nlm.nih.gov/rest/rdf/", "homepage": "https://pubchem.ncbi.nlm.nih.gov/docs/rdf", "maintainer": "NIH / NCBI", "license": "public-domain", "distribution": "redistributable", "cid": "sha256:e3f4990a3a3c74d525f2099931d09b715b53fa8d608d99dc4a82b3d6d8084f3f", "ual": "did:dkg:knitweb/sha256-e3f4990a3a3c74d525f2099931d09b715b53fa8d608d99dc4a82b3d6d8084f3f" }, { "id": "kg:chebi", "type": "chemistry_ontology", "title": "ChEBI", "url": "https://www.ebi.ac.uk/rdf/services/sparql", "homepage": "https://www.ebi.ac.uk/chebi/", "maintainer": "EMBL-EBI", "license": "CC-BY-4.0", "distribution": "redistributable", "cid": "sha256:feacc25c2d007e098413572dd46088d063df096300fd5961b17e7976bee0bb33", "ual": "did:dkg:knitweb/sha256-feacc25c2d007e098413572dd46088d063df096300fd5961b17e7976bee0bb33" }, { "id": "kg:rruff", "type": "mineral_spectral_database", "title": "RRUFF / Raman Open Database", "url": "https://raman-db.crystallography.net/", "homepage": "https://rruff.info/", "maintainer": "University of Arizona / COD", "license": "open (attribution)", "distribution": "redistributable", "cid": "sha256:41a3a3ce8df183f1c008e78e15f7dc8683b0748f7e3d899568bab694ce0cc87b", "ual": "did:dkg:knitweb/sha256-41a3a3ce8df183f1c008e78e15f7dc8683b0748f7e3d899568bab694ce0cc87b" }, { "id": "kg:the-world-avatar", "type": "dynamic_knowledge_graph", "title": "The World Avatar (J-Park Simulator)", "url": "https://theworldavatar.io/", "homepage": "https://theworldavatar.io/", "maintainer": "CMCL / University of Cambridge (CoMo/CARES)", "license": "open", "distribution": "reference_only", "cid": "sha256:7a6cc8effadef3f2bbadf60824051ced977f4971e80b3e4500dd799df39c9d5f", "ual": "did:dkg:knitweb/sha256-7a6cc8effadef3f2bbadf60824051ced977f4971e80b3e4500dd799df39c9d5f" }, { "id": "kg:emmo", "type": "domain_ontology", "title": "EMMO + domain-electrochemistry + MSEO", "url": "https://w3id.org/emmo", "homepage": "https://emmo-repo.github.io/", "maintainer": "EMMC / EMMO authors", "license": "CC-BY-4.0", "distribution": "redistributable", "cid": "sha256:f1769351e1e3fd549193594c8e9dd6321198e5f36689ce3365c40ad356481cab", "ual": "did:dkg:knitweb/sha256-f1769351e1e3fd549193594c8e9dd6321198e5f36689ce3365c40ad356481cab" }, { "id": "kg:phreeqc", "type": "thermodynamic_speciation_database", "title": "PHREEQC thermodynamic databases", "url": "https://www.usgs.gov/software/phreeqc-version-3", "homepage": "https://www.usgs.gov/software/phreeqc-version-3", "maintainer": "U.S. Geological Survey", "license": "public-domain", "distribution": "redistributable", "cid": "sha256:af9f54646d04150f8986e0ead50aecf4be72354c5f58b52d4ebbaf81e037323b", "ual": "did:dkg:knitweb/sha256-af9f54646d04150f8986e0ead50aecf4be72354c5f58b52d4ebbaf81e037323b" }, { "id": "kg:gems", "type": "thermodynamic_speciation_database", "title": "GEMS / GEM-Selektor (PSI)", "url": "https://github.com/gemshub/GEMS3K", "homepage": "https://gems.web.psi.ch/", "maintainer": "Paul Scherrer Institute", "license": "GPL-3.0 (software); data licences separate", "distribution": "reference_only", "cid": "sha256:e600eeab8c037f031ecf343616e874f4b03c2a0350b0a959b328f029b615f690", "ual": "did:dkg:knitweb/sha256-e600eeab8c037f031ecf343616e874f4b03c2a0350b0a959b328f029b615f690" }, { "id": "kg:usgs-mrdata", "type": "mineral_resource_database", "title": "USGS Mineral Resources Online Spatial Data (MRDATA)", "url": "https://mrdata.usgs.gov/services/", "homepage": "https://mrdata.usgs.gov/", "maintainer": "U.S. Geological Survey", "license": "public-domain", "distribution": "redistributable", "cid": "sha256:44e1d8d9c4a723e5dd18806e7a28b4e1a83020a40beca05ee59a681c9d1c1dd5", "ual": "did:dkg:knitweb/sha256-44e1d8d9c4a723e5dd18806e7a28b4e1a83020a40beca05ee59a681c9d1c1dd5" }, { "id": "kg:hetionet", "type": "biomedical_knowledge_graph", "title": "Hetionet", "url": "https://neo4j.het.io/", "homepage": "https://het.io/", "maintainer": "Himmelstein et al.", "license": "CC0-1.0", "distribution": "redistributable", "cid": "sha256:d1ee72135a04f944f188ccf8b1b898b4ce1fa992bf15cf4e0753a464aeeae28e", "ual": "did:dkg:knitweb/sha256-d1ee72135a04f944f188ccf8b1b898b4ce1fa992bf15cf4e0753a464aeeae28e" }, { "id": "kg:factsage", "type": "thermochemical_database", "title": "FactSage / FACT (FToxid slag data)", "url": "https://www.factsage.com/", "homepage": "https://www.factsage.com/", "maintainer": "Thermfact / GTT-Technologies", "license": "commercial", "distribution": "reference_only", "cid": "sha256:bbd645c24cde4afa7f43231fa9b64c91d3badf12903cc1bf5b9d92f520f8cf90", "ual": "did:dkg:knitweb/sha256-bbd645c24cde4afa7f43231fa9b64c91d3badf12903cc1bf5b9d92f520f8cf90" }, { "id": "kg:icsd", "type": "crystal_structure_database", "title": "Inorganic Crystal Structure Database (ICSD)", "url": "https://icsd.products.fiz-karlsruhe.de/", "homepage": "https://icsd.products.fiz-karlsruhe.de/", "maintainer": "FIZ Karlsruhe", "license": "commercial", "distribution": "reference_only", "cid": "sha256:e28b2b2869a07b3feba65a2f613b44f7f86253d6d54a4016758ad396eb6494e1", "ual": "did:dkg:knitweb/sha256-e28b2b2869a07b3feba65a2f613b44f7f86253d6d54a4016758ad396eb6494e1" } ], "cid": "sha256:eb40d21df3a1cafea0396be966a2f172a87b66e97ffdae89fdee7f1b8adae5e3", "ual": "did:dkg:knitweb/sha256-eb40d21df3a1cafea0396be966a2f172a87b66e97ffdae89fdee7f1b8adae5e3" }, "cid": "sha256:eff9ad3d617d500c92b6cd82b8092384a33cd15502486c944927b7282fc62c76", "ual": "did:dkg:knitweb/sha256-eff9ad3d617d500c92b6cd82b8092384a33cd15502486c944927b7282fc62c76" }