AM-2022-10003-A · Pyritearchived
physical & structuralrev. 5
| designation | Pyrite |
|---|---|
| chemical formula | FeS₂ |
| classification | Sulfide / Pyrite group |
| crystal system | Cubic |
| mohs hardness | 6 – 6.5 |
| density (g/cm³) | 5.02 |
| colour | Pale brass-yellow, tarnishing |
| type locality | Shimen, Hunan, China |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 342, 380, 429
notessubmitter remarks + registry
Standard pyrite reference specimen. Supplied as a single piece on a small fragment of host matrix. Re-pass note (2026-05-10). Re-pass on 2026-05-10 reproduces previous measurements within experimental uncertainty; matrix fragment re-described as siliceous shale.
chain of custody6 events · 3 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. |
|---|---|---|---|
| 2022-01-14 08:16 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2022-01-18 13:01 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2022-01-30 12:32 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-9195 | T.J. |
| 2022-01-31 16:57 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 18, drawer 16 | R.E. |
| 2024-01-31 10:48 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2026-01-30 09:03 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault B · shelf 18 · drawer 16 · last documented inspection: 2026-01-30 09:03 UTC