AM-2017-10015-A · Chalcopyritearchived
physical & structuralrev. 4
| designation | Chalcopyrite |
|---|---|
| chemical formula | CuFeS₂ |
| classification | Sulfide |
| crystal system | Tetragonal |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.20 |
| colour | Peacock blue, weathered surface |
| type locality | Weardale, County Durham, England |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 293, 320, 353
notessubmitter remarks + registry
Donated as part of a private estate; no individual provenance retained.