AM-2025-10003-A · Goethitearchived
physical & structuralrev. 1
| designation | Goethite |
|---|---|
| chemical formula | FeO(OH) |
| classification | Oxide-hydroxide |
| crystal system | Orthorhombic |
| mohs hardness | 5 – 5.5 |
| density (g/cm³) | 4.29 |
| colour | Deep brown to yellowish brown |
| type locality | Anjanabonoina, Madagascar |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 248, 477, 548, 684
notessubmitter remarks + registry
Specimen accompanied by a single typewritten card listing the locality and the year of collection. No analytical data was supplied.
chain of custody4 events · 1 seal-break
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. |
|---|---|---|---|
| 2025-10-07 08:19 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2025-10-09 09:36 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2025-10-15 11:28 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: ICDD card 04-5817 | M.A. |
| 2025-10-16 14:34 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 19, drawer 12 | V.O. |
physical location: vault D · shelf 19 · drawer 12 · last documented inspection: 2025-10-16 14:34 UTC