Chalcopyrite
A sulfide mineral with formula CuFeS2. Chalcopyrite is the most important copper ore — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 1308-56-1 | ChEBI ↗ |
| Molecular formula | Cu.Fe.2S | ChEBI ↗ |
| Molar mass | 183.525 g/mol | ChEBI ↗ |
| Monoisotopic mass | 182.80868 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:86202 | ChEBI ↗ |
Names & structural identifiers
Copy any identifierchalcopyriteDVRDHUBQLOKMHZ-UHFFFAOYSA-N[Cu+2].[Fe+2].[S-2].[S-2]InChI=1S/Cu.Fe.2S/q2*+2;2*-2Classification & relationships
ChEBI ontologyMass ↔ amount of substance
Calculated from sourced massUses 183.525 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsFeCuSCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.