AM-2022-10001-A · Bariteunverified
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. 3
| designation | Barite |
|---|---|
| chemical formula | BaSO₄ |
| classification | Sulfate / Barite group |
| crystal system | Orthorhombic |
| mohs hardness | 3 – 3.5 |
| density (g/cm³) | 4.49 |
| colour | Greyish white |
| type locality | Příbram, Central Bohemian Region, Czech Republic |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 452, 462, 617, 989, 1140
notessubmitter remarks + registry
Standard barite reference specimen. Supplied as a single piece on a small fragment of host matrix.
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. |
|---|---|---|---|
| 2022-01-24 13:07 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | R.E. |
| 2022-01-28 13:14 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2022-02-08 14:04 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 175701 | M.A. |
| 2022-02-10 08:15 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 22, drawer 10 | R.E. |
| 2024-02-10 11:18 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2026-02-09 12:20 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault D · shelf 22 · drawer 10 · last documented inspection: 2026-02-09 12:20 UTC