AM-2014-10022-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) | 4.06 |
| colour | Bright green crusts |
| type locality | Schneeberg, Saxony, Germany |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 156, 221, 433
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. |
|---|---|---|---|
| 2014-07-27 09:04 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2014-07-30 15:56 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2014-08-02 14:30 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: AMCSD #1652 | M.A. |
| 2014-08-04 13:23 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 27, drawer 17 | S.W. |
| 2016-08-03 15:37 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2018-08-03 13:03 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2020-08-02 11:39 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2022-08-02 16:42 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault A · shelf 27 · drawer 17 · last documented inspection: 2022-08-02 16:42 UTC