AM-2016-10004-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) | 3.69 |
| colour | Banded pink and white |
| type locality | Schwarzwald, Baden-Württemberg, Germany |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 184, 285, 723, 1084
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. |
|---|---|---|---|
| 2016-12-20 13:55 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2016-12-25 10:07 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | S.W. |
| 2017-01-08 10:30 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-2522 | S.W. |
| 2017-01-09 08:45 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 06, drawer 32 | R.E. |
| 2019-01-09 14:43 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2021-01-08 08:32 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2023-01-08 16:15 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2025-01-07 08:43 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
physical location: vault A · shelf 06 · drawer 32 · last documented inspection: 2025-01-07 08:43 UTC