AM-2015-10015-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 | Faintly pale brass yellow with greenish cast |
| type locality | Shigar valley, Gilgit-Baltistan, Pakistan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 322, 385
notessubmitter remarks + registry
Specimen accompanied by a single typewritten card listing the locality and the year of collection. Original collection number illegible due to ink fade.
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. |
|---|---|---|---|
| 2015-12-21 09:50 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2015-12-26 09:45 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | S.W. |
| 2016-01-07 14:18 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: AMCSD #5135 | S.W. |
| 2016-01-10 13:39 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 03, drawer 15 | V.O. |
| 2018-01-09 09:57 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2020-01-09 09:44 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2022-01-08 14:19 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2024-01-08 10:36 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
physical location: vault B · shelf 03 · drawer 15 · last documented inspection: 2024-01-08 10:36 UTC
errata · corrections of record1 entry
The following corrections have been issued for this record since accession. Original values are retained here for citation purposes; the canonical metadata above reflects the most recent correction.
| id | issued | field | was | now |
|---|---|---|---|---|
| ERR-2024-0005 | 2024-06-25 | density | 2.7 | 2.71 |