AM-2013-10020-A · Hematitearchived
physical & structuralrev. 1
| designation | Hematite |
|---|---|
| chemical formula | Fe₂O₃ |
| classification | Oxide / Hematite group |
| crystal system | Trigonal |
| mohs hardness | 5 – 6 |
| density (g/cm³) | 5.20 |
| colour | Weakly zoned, steel grey to black, red streak |
| type locality | Bahia, Brazil |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 224, 246, 293, 496, 612, 1319
notessubmitter remarks + registry
Crystals up to 8 mm on edge, in random orientation. 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. |
|---|---|---|---|
| 2013-06-01 11:41 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2013-06-04 09:39 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2013-06-18 08:04 UTC | pass B | Raman acquisition; 6 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: COD entry 157254 | H.D. |
| 2013-06-19 13:58 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 20, drawer 06 | S.W. |
| 2015-06-19 11:17 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2017-06-18 15:34 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2019-06-18 14:36 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2021-06-17 11:49 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault C · shelf 20 · drawer 06 · last documented inspection: 2021-06-17 11:49 UTC