AM-2021-10011-A · Sideritearchived
physical & structuralrev. 3
| designation | Siderite |
|---|---|
| chemical formula | FeCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4.5 |
| density (g/cm³) | 3.84 |
| colour | Tarnished bronze |
| type locality | Cínovec, Krušné hory, Czech Republic |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 184, 283, 1086, 1733
notessubmitter remarks + registry
Submitter cited the type locality. Specimen retained for reference; no chain-of-custody documentation available beyond the submission packet.
chain of custody6 events · 3 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. |
|---|---|---|---|
| 2021-10-10 11:39 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2021-10-12 11:17 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2021-10-18 14:00 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: ICDD card 04-2836 | M.A. |
| 2021-10-19 08:41 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 17, drawer 23 | R.E. |
| 2023-10-19 15:30 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2025-10-18 11:31 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault D · shelf 17 · drawer 23 · last documented inspection: 2025-10-18 11:31 UTC