AM-2016-10021-A · Magnetitearchived
physical & structuralrev. 3
| designation | Magnetite |
|---|---|
| chemical formula | Fe₃O₄ |
| classification | Oxide / Spinel group |
| crystal system | Cubic |
| mohs hardness | 5.5 – 6.5 |
| density (g/cm³) | 5.17 |
| colour | Steel grey, octahedral habit |
| type locality | Tsumeb, Otjikoto, Namibia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 303, 537, 669
notessubmitter remarks + registry
Standard magnetite 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. |
|---|---|---|---|
| 2016-12-11 16:36 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | C.B. |
| 2016-12-12 14:25 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2016-12-15 14:27 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: COD entry 157646 | M.A. |
| 2016-12-17 08:53 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 19, drawer 08 | C.B. |
| 2018-12-17 10:04 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2020-12-16 16:22 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2022-12-16 11:17 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2024-12-15 10:19 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault C · shelf 19 · drawer 08 · last documented inspection: 2024-12-15 10:19 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-2018-0003 | 2018-07-12 | color | green | olive-green with brown rim |