AM-2020-10007-A · Smithsoniteactive
physical & structuralrev. 1
| designation | Smithsonite |
|---|---|
| chemical formula | ZnCO₃ |
| classification | Carbonate / Calcite group |
| crystal system | Trigonal |
| mohs hardness | 4 – 4.5 |
| density (g/cm³) | 4.43 |
| colour | Botryoidal blue-green |
| type locality | Anjanabonoina, Madagascar |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 194, 305, 730, 1093, 1732
notessubmitter remarks + registry
Submitter cited the type locality. Specimen retained for reference; no chain-of-custody documentation available beyond the submission packet.
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. |
|---|---|---|---|
| 2020-12-14 16:40 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | C.B. |
| 2020-12-19 13:29 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | V.O. |
| 2020-12-27 08:40 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: ICDD card 04-7206 | V.O. |
| 2020-12-28 12:56 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 22, drawer 33 | C.B. |
| 2022-12-28 14:50 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2024-12-27 09:29 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault B · shelf 22 · drawer 33 · last documented inspection: 2024-12-27 09:29 UTC