AM-2016-10001-A · Dolomitearchived
physical & structuralrev. 1
| designation | Dolomite |
|---|---|
| chemical formula | CaMg(CO₃)₂ |
| classification | Carbonate / Dolomite group |
| crystal system | Trigonal |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 2.86 |
| colour | Pale beige |
| type locality | Kimberley district, Northern Cape, South Africa |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 178, 301, 727, 1100, 1445
notessubmitter remarks + registry
Crystals up to 7 mm on edge, sharply terminated. No accompanying matrix.
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. |
|---|---|---|---|
| 2016-07-08 14:15 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2016-07-09 10:30 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | R.E. |
| 2016-07-19 08:12 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: COD entry 113971 | R.E. |
| 2016-07-22 10:06 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 26, drawer 06 | T.J. |
| 2018-07-22 14:52 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2020-07-21 13:55 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2022-07-21 12:48 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2024-07-20 14:30 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault D · shelf 26 · drawer 06 · last documented inspection: 2024-07-20 14:30 UTC