AM-2026-00021-A · Garnet, var. pyrope (Mg₃Al₂(SiO₄)₃)archived
physical & structuralrev. 1
| designation | Garnet, var. pyrope (Mg₃Al₂(SiO₄)₃) |
|---|---|
| chemical formula | Mg₃Al₂(SiO₄)₃ |
| classification | Nesosilicate / Garnet group |
| crystal system | Cubic |
| mohs hardness | 7 – 7.5 |
| density (g/cm³) | 3.58 |
| colour | Deep red, sometimes purplish |
| type locality | Itabira, Minas Gerais, Brazil |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 365, 561, 921
notessubmitter remarks + registry
Rounded dodecahedral crystals of deep red colouration with vitreous lustre on unabraded faces. Submitted as part of a small consignment of Itabira material; locality recorded to district level only.
chain of custody2 events · 0 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. |
|---|---|---|---|
| 2026-10-10 11:40 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2026-10-12 11:59 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
physical location: vault B · shelf 07 · drawer 24 · last documented inspection: 2026-10-12 11:59 UTC