AM-2022-10010-A · Quartzarchived
physical & structuralrev. 3
| designation | Quartz |
|---|---|
| chemical formula | SiO₂ |
| classification | Tectosilicate / Quartz group |
| crystal system | Trigonal |
| mohs hardness | 7 |
| density (g/cm³) | 2.65 |
| colour | Weakly zoned, colourless, transparent |
| type locality | Erongo Mountains, Erongo, Namibia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 127, 208, 355
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. |
|---|---|---|---|
| 2022-06-10 11:33 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | S.W. |
| 2022-06-11 14:11 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | P.S. |
| 2022-06-18 14:53 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 174334 | P.S. |
| 2022-06-21 10:15 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 16, drawer 31 | S.W. |
| 2024-06-20 09:03 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
| 2026-06-20 13:31 UTC | re-inspection | seal intact · label legible · no visible degradation | H.D. |
physical location: vault D · shelf 16 · drawer 31 · last documented inspection: 2026-06-20 13:31 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-2021-0007 | 2021-10-16 | formula | Fe2O3 | Fe³⁺₂O₃ |