AM-2011-04099-A · Hematite, var. speculararchived
physical & structuralrev. 1
| designation | Hematite, var. specular |
|---|---|
| chemical formula | Fe₂O₃ |
| classification | Oxide / Hematite group |
| crystal system | Trigonal |
| mohs hardness | 5 – 6 |
| density (g/cm³) | 5.26 |
| colour | Steel grey to black, red streak |
| type locality | Rio Marina, Elba, Italy |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 225, 245, 292, 411, 497, 612, 1320
notessubmitter remarks + registry
Tabular crystals on matrix; specularite habit dominant.
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. |
|---|---|---|---|
| 2011-08-14 11:24 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | N.P. |
| 2011-08-16 13:48 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2011-08-24 12:46 UTC | pass B | Raman acquisition; 7 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 146464 | T.J. |
| 2011-08-25 15:06 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 02, drawer 13 | N.P. |
| 2013-08-24 16:53 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2015-08-24 16:24 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2017-08-23 11:33 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2019-08-23 13:38 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault B · shelf 02 · drawer 13 · last documented inspection: 2019-08-23 13:38 UTC