AM-2012-10019-A · Rhodochrositearchived
physical & structuralrev. 1
| designation | Rhodochrosite |
|---|---|
| chemical formula | MnCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 3.69 |
| colour | Banded pink and white |
| type locality | Skardu, Gilgit-Baltistan, Pakistan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 722, 1084, 1716
notessubmitter remarks + registry
Donated as part of a private estate; no individual provenance retained.
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. |
|---|---|---|---|
| 2012-04-04 10:15 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2012-04-06 12:53 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | R.E. |
| 2012-04-15 09:05 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: COD entry 199816 | R.E. |
| 2012-04-18 12:01 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 13, drawer 30 | L.K. |
| 2014-04-18 15:45 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2016-04-17 10:18 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2018-04-17 12:58 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2020-04-16 13:04 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault C · shelf 13 · drawer 30 · last documented inspection: 2020-04-16 13:04 UTC