AM-2017-10001-B · Magnetite, anomaly under reviewunverified
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. 6
| designation | Magnetite, anomaly under review |
|---|---|
| chemical formula | Fe₃O₄ |
| classification | Oxide / Spinel group |
| crystal system | Cubic |
| mohs hardness | 5.5 – 6.5 |
| density (g/cm³) | 5.19 |
| colour | Steel grey, octahedral habit |
| type locality | Kongsberg, Buskerud, Norway |
raman spectroscopy532 nm · pass B
reported peaks (cm⁻¹): 304, 540, 667
notessubmitter remarks + registry
Magnetic moment measured at room temperature is approximately 14% above the theoretical maximum for stoichiometric magnetite of the cited mass. Moment retains its magnitude through demagnetisation cycling to 600 K. No mechanism has been advanced.
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. |
|---|---|---|---|
| 2017-01-17 16:43 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2017-01-20 09:42 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2017-01-25 15:49 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 128928 | H.D. |
| 2017-01-28 13:12 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 11, drawer 08 | T.J. |
| 2019-01-28 09:09 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2021-01-27 13:38 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2023-01-27 16:34 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
| 2025-01-26 09:39 UTC | re-inspection | seal intact · label legible · no visible degradation | R.E. |
physical location: vault D · shelf 11 · drawer 08 · last documented inspection: 2025-01-26 09:39 UTC