AM-2016-10025-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) | 4.08 |
| colour | Banded green |
| type locality | Dzhezkazgan, Karaganda, Kazakhstan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 177, 220, 271, 434
notessubmitter remarks + registry
Photographic record retained. Specimen temperature held at lab ambient throughout 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. |
|---|---|---|---|
| 2016-07-11 15:02 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2016-07-13 14:04 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2016-07-28 13:33 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: RRUFF R05003 | M.A. |
| 2016-07-30 10:18 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 11, drawer 11 | T.J. |
| 2018-07-30 14:02 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2020-07-29 13:13 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2022-07-29 15:03 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2024-07-28 09:30 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault C · shelf 11 · drawer 11 · last documented inspection: 2024-07-28 09:30 UTC