AM-2008-10012-A · Sideriteactive
physical & structuralrev. 2
| designation | Siderite |
|---|---|
| chemical formula | FeCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4.5 |
| density (g/cm³) | 3.94 |
| colour | Honey brown |
| type locality | N'Chwaning II mine, Northern Cape, South Africa |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 182, 282, 730, 1734
notessubmitter remarks + registry
Donated as part of a university overflow consignment; 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. |
|---|---|---|---|
| 2008-04-05 10:04 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | H.D. |
| 2008-04-10 09:45 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | P.S. |
| 2008-04-15 12:59 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: AMCSD #4537 | P.S. |
| 2008-04-18 16:30 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 11, drawer 35 | H.D. |
| 2010-04-18 14:48 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2012-04-17 16:18 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2014-04-17 13:12 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2016-04-16 09:39 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault A · shelf 11 · drawer 35 · last documented inspection: 2016-04-16 09:39 UTC