AM-2010-10001-B · Pyrite, 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. 5
| designation | Pyrite, anomaly under review |
|---|---|
| chemical formula | FeS₂ |
| classification | Sulfide / Pyrite group |
| crystal system | Cubic |
| mohs hardness | 6 – 6.5 |
| density (g/cm³) | 5.07 |
| colour | Iridescent on weathered surface |
| type locality | Joplin district, Missouri, USA |
raman spectroscopy532 nm · pass B
reported peaks (cm⁻¹): 342, 379, 430
notessubmitter remarks + registry
Specimen retained for repeat magnetometric examination. Magnetic moment, measured at 4 K, exceeds the value predicted for the reported iron content by approximately one order of magnitude. The discrepancy is reproducible across two re-mounts. No structural distortion is detectable by powder XRD.
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. |
|---|---|---|---|
| 2010-05-28 15:50 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2010-05-29 11:01 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2010-06-13 16:33 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: RRUFF R05009 | M.A. |
| 2010-06-15 14:15 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 16, drawer 34 | V.O. |
| 2012-06-14 13:52 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2014-06-14 12:51 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2016-06-13 13:27 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2018-06-13 10:56 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
physical location: vault B · shelf 16 · drawer 34 · last documented inspection: 2018-06-13 10:56 UTC