AM-2026-00019-A · Covellite (CuS)archived
physical & structuralrev. 1
| designation | Covellite (CuS) |
|---|---|
| chemical formula | CuS |
| classification | Sulfide |
| crystal system | Hexagonal |
| mohs hardness | 1.5 – 2 |
| density (g/cm³) | 4.68 |
| colour | Indigo-blue with iridescent tarnish |
| type locality | Witwatersrand basin, South Africa |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 267, 472
notessubmitter remarks + registry
Platy crystals of indigo-blue colouration with iridescent tarnish on basal surfaces. Submitted as part of a small consignment of Witwatersrand basin material; locality recorded to basin level only.
chain of custody4 events · 1 seal-break
Events recorded against this accession in the registry's printed custody book. Operator initials are anonymous. Storage codes follow the convention vault-shelf-drawer.
| timestamp | stage | detail | op. |
|---|---|---|---|
| 2026-09-14 14:14 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | H.D. |
| 2026-09-16 13:03 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2026-09-20 15:59 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 133103 | T.J. |
| 2026-09-23 15:20 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 18, drawer 30 | H.D. |
physical location: vault A · shelf 18 · drawer 30 · last documented inspection: 2026-09-23 15:20 UTC