AM-2026-00011-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 | 7 – 7.5 |
| density (g/cm³) | 4.32 |
| colour | Deep red |
| type locality | Broken Hill, New South Wales, Australia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 355, 552, 912
notessubmitter remarks + registry
Dodecahedral crystals of deep red colouration embedded in a micaceous schist matrix. Submitted as part of a small consignment of Broken Hill material; locality recorded to district level only.
chain of custody4 events · 1 seal-break
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. |
|---|---|---|---|
| 2026-07-09 13:29 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | N.P. |
| 2026-07-14 13:46 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2026-07-21 11:09 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: ICDD card 04-7372 | H.D. |
| 2026-07-24 13:22 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 01, drawer 32 | N.P. |
physical location: vault D · shelf 01 · drawer 32 · last documented inspection: 2026-07-24 13:22 UTC