AM-2025-10008-A · Magnetitearchived
physical & structuralrev. 4
| designation | Magnetite |
|---|---|
| chemical formula | Fe₃O₄ |
| classification | Oxide / Spinel group |
| crystal system | Cubic |
| mohs hardness | 5.5 – 6.5 |
| density (g/cm³) | 5.16 |
| colour | Black, metallic to submetallic |
| type locality | Kovdor massif, Murmansk, Russia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 303, 539, 666
notessubmitter remarks + registry
Standard magnetite reference specimen. Supplied as a single piece on a small fragment of host matrix.
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. |
|---|---|---|---|
| 2025-08-25 11:36 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2025-08-30 14:16 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | L.K. |
| 2025-09-11 09:21 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-8157 | L.K. |
| 2025-09-14 14:21 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 26, drawer 10 | L.K. |
physical location: vault C · shelf 26 · drawer 10 · last documented inspection: 2025-09-14 14:21 UTC
errata · corrections of record1 entry
The following corrections have been issued for this record since accession. Original values are retained here for citation purposes; the canonical metadata above reflects the most recent correction.
| id | issued | field | was | now |
|---|---|---|---|---|
| ERR-2014-0004 | 2014-03-02 | locality | Adirondack massif | Adirondack massif, southern flank |