AM-2020-10001-B · Hematite, anomaly under reviewunverified
| designation | Hematite, anomaly under review |
|---|---|
| chemical formula | Fe₂O₃ |
| classification | Oxide / Hematite group |
| crystal system | Trigonal |
| mohs hardness | 5 – 6 |
| density (g/cm³) | 5.29 |
| colour | Steel grey to black, red streak |
| type locality | Weardale, County Durham, England |
reported peaks (cm⁻¹): 223, 244, 292, 497, 1321
Anisotropic conductivity measured along the (0001) direction is approximately 1800× the value measured perpendicular to it, exceeding the reported anisotropy ratio for stoichiometric hematite by roughly a factor of three. The behaviour reproduces on a freshly cleaved surface. Re-pass note (2026-05-17). Re-pass on 2026-05-17 reproduces previous anisotropy measurements within experimental uncertainty; status remains UNVERIFIED pending independent confirmation.
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. |
|---|---|---|---|
| 2020-09-23 15:20 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2020-09-24 12:56 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | C.B. |
| 2020-10-02 13:42 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: COD entry 147800 | C.B. |
| 2020-10-03 09:22 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 16, drawer 23 | L.K. |
| 2022-10-03 13:40 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2024-10-02 12:36 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
physical location: vault C · shelf 16 · drawer 23 · last documented inspection: 2024-10-02 12:36 UTC