AM-2020-10008-A · Malachitearchived
physical & structuralrev. 1
| designation | Malachite |
|---|---|
| chemical formula | Cu₂(CO₃)(OH)₂ |
| classification | Carbonate / hydrous |
| crystal system | Monoclinic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.06 |
| colour | Banded green |
| type locality | Schwarzwald, Baden-Württemberg, Germany |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 154, 178, 272, 433
notessubmitter remarks + registry
Donated as part of a decommissioned teaching collection; no individual provenance retained.
chain of custody6 events · 3 seal-breaks
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. |
|---|---|---|---|
| 2020-08-06 15:07 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2020-08-08 12:14 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | S.W. |
| 2020-08-13 16:36 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: COD entry 126342 | S.W. |
| 2020-08-14 09:28 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 27, drawer 30 | V.O. |
| 2022-08-14 10:21 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2024-08-13 14:56 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault B · shelf 27 · drawer 30 · last documented inspection: 2024-08-13 14:56 UTC