AM-2017-10023-A · Hematitearchived
physical & structuralrev. 4
| designation | Hematite |
|---|---|
| chemical formula | Fe₂O₃ |
| classification | Oxide / Hematite group |
| crystal system | Trigonal |
| mohs hardness | 5 – 6 |
| density (g/cm³) | 5.30 |
| colour | Dull earthy red |
| type locality | Linwu, Hunan, China |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 225, 245, 293, 496, 612, 1320
notessubmitter remarks + registry
Crystals up to 23 mm on edge, partly etched. 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. |
|---|---|---|---|
| 2017-05-11 16:01 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2017-05-16 16:36 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | P.S. |
| 2017-05-30 15:57 UTC | pass B | Raman acquisition; 6 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-1360 | P.S. |
| 2017-06-01 08:49 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 22, drawer 09 | L.K. |
| 2019-06-01 13:22 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2021-05-31 08:41 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2023-05-31 10:29 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2025-05-30 16:10 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault A · shelf 22 · drawer 09 · last documented inspection: 2025-05-30 16:10 UTC