AM-2011-10001-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) | 4.09 |
| colour | Faintly banded green |
| type locality | Mont Saint-Hilaire, Quebec, Canada |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 158, 178, 220, 270
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. |
|---|---|---|---|
| 2011-01-18 09:56 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2011-01-19 10:12 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | N.P. |
| 2011-02-03 14:14 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: ICDD card 04-3742 | N.P. |
| 2011-02-04 10:17 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 23, drawer 20 | R.E. |
| 2013-02-03 09:09 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2015-02-03 13:17 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2017-02-02 15:16 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2019-02-02 10:23 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
physical location: vault B · shelf 23 · drawer 20 · last documented inspection: 2019-02-02 10:23 UTC