AM-2017-10001-A · Magnetiteunverified
The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 4
| designation | Magnetite |
|---|---|
| chemical formula | Fe₃O₄ |
| classification | Oxide / Spinel group |
| crystal system | Cubic |
| mohs hardness | 5.5 – 6.5 |
| density (g/cm³) | 5.11 |
| colour | Black, metallic to submetallic |
| type locality | Kovdor massif, Murmansk, Russia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 304, 537, 666
notessubmitter remarks + registry
Magnetite of ordinary appearance and habit. Used as a calibration reference during the analytical pass.
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. |
|---|---|---|---|
| 2017-06-04 10:24 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2017-06-05 10:04 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | N.P. |
| 2017-06-11 15:20 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: RRUFF R05002 | N.P. |
| 2017-06-13 14:54 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 16, drawer 32 | R.E. |
| 2019-06-13 14:57 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2021-06-12 09:21 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2023-06-12 16:43 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2025-06-11 12:43 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault D · shelf 16 · drawer 32 · last documented inspection: 2025-06-11 12:43 UTC