AM-2018-10001-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) | 4.32 |
| colour | Botryoidal black-brown |
| type locality | Ratnapura, Sabaragamuwa, Sri Lanka |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 248, 386, 477, 548, 684
notessubmitter remarks + registry
Standard goethite reference specimen. Supplied as a single piece on a small fragment of host 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. |
|---|---|---|---|
| 2018-01-22 09:30 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2018-01-25 12:30 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | V.O. |
| 2018-01-31 12:58 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: AMCSD #2422 | V.O. |
| 2018-02-03 14:59 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 16, drawer 31 | L.K. |
| 2020-02-03 16:43 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2022-02-02 08:42 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2024-02-02 14:35 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2026-02-01 13:21 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault D · shelf 16 · drawer 31 · last documented inspection: 2026-02-01 13:21 UTC