AM-2016-10013-A · Olivine (forsterite)archived
physical & structuralrev. 2
| designation | Olivine (forsterite) |
|---|---|
| chemical formula | (Mg,Fe)₂SiO₄ |
| classification | Nesosilicate / Olivine group |
| crystal system | Orthorhombic |
| mohs hardness | 6.5 – 7 |
| density (g/cm³) | 3.31 |
| colour | Pale greenish-yellow |
| type locality | Sweet Home Mine, Park County, Colorado, USA |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 824, 857
notessubmitter remarks + registry
Macroscopic appearance consistent with olivine (forsterite); no surface alteration observed at the time of intake.
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. |
|---|---|---|---|
| 2016-03-11 12:28 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2016-03-14 15:37 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2016-03-18 08:22 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: AMCSD #7565 | H.D. |
| 2016-03-20 08:01 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 23, drawer 20 | L.K. |
| 2018-03-20 08:18 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2020-03-19 11:08 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2022-03-19 11:06 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2024-03-18 08:17 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault C · shelf 23 · drawer 20 · last documented inspection: 2024-03-18 08:17 UTC