AM-2016-10022-A · Rhodochrositearchived
physical & structuralrev. 4
| designation | Rhodochrosite |
|---|---|
| chemical formula | MnCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 3.71 |
| colour | Cherry pink |
| type locality | Skardu, Gilgit-Baltistan, Pakistan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 186, 287, 723, 1086, 1715
notessubmitter remarks + registry
Crystals up to 19 mm on edge, in random orientation. On dolomite matrix.
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. |
|---|---|---|---|
| 2016-07-20 16:50 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2016-07-25 10:57 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | L.K. |
| 2016-08-03 12:36 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: AMCSD #9158 | L.K. |
| 2016-08-06 14:41 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 12, drawer 07 | V.O. |
| 2018-08-06 12:02 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2020-08-05 11:24 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2022-08-05 09:15 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2024-08-04 11:26 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault B · shelf 12 · drawer 07 · last documented inspection: 2024-08-04 11:26 UTC