AM-2017-10020-A · Malachitearchived
physical & structuralrev. 4
| designation | Malachite |
|---|---|
| chemical formula | Cu₂(CO₃)(OH)₂ |
| classification | Carbonate / hydrous |
| crystal system | Monoclinic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.07 |
| colour | Weakly zoned, banded green |
| type locality | Kovdor massif, Murmansk, Russia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 154, 177, 219, 269, 431, 1098
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. |
|---|---|---|---|
| 2017-12-27 09:22 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | N.P. |
| 2017-12-31 15:52 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | V.O. |
| 2018-01-11 13:33 UTC | pass B | Raman acquisition; 6 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 155746 | V.O. |
| 2018-01-12 15:06 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 27, drawer 29 | N.P. |
| 2020-01-12 11:19 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2022-01-11 16:33 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2024-01-11 13:02 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2026-01-10 12:50 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
physical location: vault B · shelf 27 · drawer 29 · last documented inspection: 2026-01-10 12:50 UTC