AM-2017-10004-A · Malachitearchived
physical & structuralrev. 3
| designation | Malachite |
|---|---|
| chemical formula | Cu₂(CO₃)(OH)₂ |
| classification | Carbonate / hydrous |
| crystal system | Monoclinic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.05 |
| colour | Bright green crusts |
| type locality | Panasqueira, Castelo Branco, Portugal |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 154, 177, 221, 269, 435, 1097
notessubmitter remarks + registry
Macroscopic appearance consistent with malachite; no surface alteration observed at the time of intake.
chain of custody8 events · 5 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. |
|---|---|---|---|
| 2017-02-17 11:08 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2017-02-19 15:49 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | L.K. |
| 2017-02-27 16:56 UTC | pass B | Raman acquisition; 6 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: ICDD card 04-9663 | L.K. |
| 2017-02-28 11:04 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 14, drawer 28 | R.E. |
| 2019-02-28 09:58 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2021-02-27 16:13 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2023-02-27 12:27 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2025-02-26 13:50 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
physical location: vault B · shelf 14 · drawer 28 · last documented inspection: 2025-02-26 13:50 UTC