AM-2009-10011-A · Garnet, var. almandinearchived
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 | Faintly deep red-brown |
| type locality | Tsumeb, Otjikoto, Namibia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 352, 553, 1052
notessubmitter remarks + registry
Crystals up to 13 mm on edge, with euhedral faces. On dolomite matrix.
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. |
|---|---|---|---|
| 2009-03-29 09:08 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2009-03-31 13:38 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2009-04-06 10:48 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: ICDD card 04-1390 | H.D. |
| 2009-04-07 16:47 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 06, drawer 11 | R.E. |
| 2011-04-07 12:32 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2013-04-06 09:24 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2015-04-06 12:39 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2017-04-05 16:37 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault A · shelf 06 · drawer 11 · last documented inspection: 2017-04-05 16:37 UTC