AM-2012-10014-A · Rhodochrositeactive
physical & structuralrev. 1
| designation | Rhodochrosite |
|---|---|
| chemical formula | MnCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 3.70 |
| colour | Pale rose |
| type locality | Långban, Värmland, Sweden |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 182, 286, 721, 1086, 1716
notessubmitter remarks + registry
Specimen accompanied by a single typewritten card listing the locality and the year of collection. Original collection number illegible due to ink fade.
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. |
|---|---|---|---|
| 2012-06-20 09:25 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2012-06-23 08:33 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | C.B. |
| 2012-07-04 09:02 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: RRUFF R05001 | C.B. |
| 2012-07-05 11:32 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 20, drawer 23 | S.W. |
| 2014-07-05 08:12 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2016-07-04 08:26 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2018-07-04 13:05 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2020-07-03 12:02 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
physical location: vault B · shelf 20 · drawer 23 · last documented inspection: 2020-07-03 12:02 UTC