AM-2016-03102-A · Olivine (forsterite)archived
physical & structuralrev. 1
| designation | Olivine (forsterite) |
|---|---|
| chemical formula | (Mg,Fe)₂SiO₄ |
| classification | Nesosilicate / Olivine group |
| crystal system | Orthorhombic |
| mohs hardness | 6.5 – 7 |
| density (g/cm³) | 3.27 |
| colour | Olive green |
| type locality | Zabargad Island, Egypt |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 824, 856
notessubmitter remarks + registry
Gem-quality crystal fragment.
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. |
|---|---|---|---|
| 2016-08-30 12:41 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | P.S. |
| 2016-09-03 08:02 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | V.O. |
| 2016-09-13 16:13 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: AMCSD #2075 | V.O. |
| 2016-09-15 13:49 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 24, drawer 02 | P.S. |
| 2018-09-15 16:09 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2020-09-14 12:25 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2022-09-14 16:25 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2024-09-13 10:29 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault B · shelf 24 · drawer 02 · last documented inspection: 2024-09-13 10:29 UTC