AM-2014-10004-A · Marcasitearchived
physical & structuralrev. 3
| designation | Marcasite |
|---|---|
| chemical formula | FeS₂ |
| classification | Sulfide / Marcasite group |
| crystal system | Orthorhombic |
| mohs hardness | 6 – 6.5 |
| density (g/cm³) | 4.87 |
| colour | Pale brass yellow with greenish cast |
| type locality | Erongo Mountains, Erongo, Namibia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 323, 387
notessubmitter remarks + registry
Submitter cited the type locality. Specimen retained for reference; no chain-of-custody documentation available beyond the submission packet.
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. |
|---|---|---|---|
| 2014-09-24 10:06 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2014-09-27 11:52 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | S.W. |
| 2014-10-08 09:53 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: AMCSD #5142 | S.W. |
| 2014-10-10 09:30 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 02, drawer 15 | S.W. |
| 2016-10-09 14:40 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2018-10-09 10:28 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2020-10-08 15:16 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2022-10-08 16:39 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault C · shelf 02 · drawer 15 · last documented inspection: 2022-10-08 16:39 UTC