AM-2014-10018-A · Malachitearchived
physical & structuralrev. 2
| designation | Malachite |
|---|---|
| chemical formula | Cu₂(CO₃)(OH)₂ |
| classification | Carbonate / hydrous |
| crystal system | Monoclinic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.04 |
| colour | Banded green |
| type locality | Bahia, Brazil |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 155, 269, 432
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. |
|---|---|---|---|
| 2014-12-13 10:14 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2014-12-14 11:49 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2014-12-28 16:45 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 197322 | T.J. |
| 2014-12-30 15:52 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 25, drawer 32 | L.K. |
| 2016-12-29 16:42 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2018-12-29 14:00 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2020-12-28 09:22 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2022-12-28 10:01 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault D · shelf 25 · drawer 32 · last documented inspection: 2022-12-28 10:01 UTC