AM-2026-10003-A · Calcitearchived
physical & structuralrev. 4
| designation | Calcite |
|---|---|
| chemical formula | CaCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 3 |
| density (g/cm³) | 2.70 |
| colour | Deep colourless, transparent |
| type locality | Bou Azzer, Drâa-Tafilalet, Morocco |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 284, 711, 1087, 1439, 1749
notessubmitter remarks + registry
Specimen accompanied by a single typewritten card listing the locality and the year of collection. No analytical data was supplied.
chain of custody4 events · 1 seal-break
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. |
|---|---|---|---|
| 2026-02-08 09:16 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2026-02-10 10:32 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | P.S. |
| 2026-02-18 11:24 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: COD entry 123583 | P.S. |
| 2026-02-19 09:23 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 06, drawer 24 | V.O. |
physical location: vault D · shelf 06 · drawer 24 · last documented inspection: 2026-02-19 09:23 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-2012-0005 | 2012-08-25 | locality | Adirondack massif | Adirondack massif, southern flank |