AM-2017-10011-A · Garnet, var. almandineunverified
The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 1
| designation | Garnet, var. almandine |
|---|---|
| chemical formula | Fe₃Al₂(SiO₄)₃ |
| classification | Nesosilicate / Garnet group |
| crystal system | Cubic |
| mohs hardness | 6.5 – 7.5 |
| density (g/cm³) | 4.35 |
| colour | Deep red-brown |
| type locality | Kimberley district, Northern Cape, South Africa |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 350, 550, 914, 1052
notessubmitter remarks + registry
Photographic record retained. Routine intake; no anomalies noted.
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. |
|---|---|---|---|
| 2017-03-30 16:23 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2017-04-02 11:09 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2017-04-06 12:13 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: AMCSD #5507 | T.J. |
| 2017-04-08 16:53 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 17, drawer 35 | S.W. |
| 2019-04-08 14:16 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2021-04-07 09:30 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2023-04-07 11:52 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2025-04-06 12:13 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault C · shelf 17 · drawer 35 · last documented inspection: 2025-04-06 12:13 UTC
errata · corrections of record1 entry
The following corrections have been issued for this record since accession. Original values are retained here for citation purposes; the canonical metadata above reflects the most recent correction.
| id | issued | field | was | now |
|---|---|---|---|---|
| ERR-2010-0003 | 2010-12-11 | color | green | olive-green with brown rim |