AM-2014-10017-A · Cassiteritearchived
physical & structuralrev. 1
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 7.05 |
| colour | Weakly zoned, brown to black, adamantine |
| type locality | South Crofty mine, Cornwall, England |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 476, 634, 774
notessubmitter remarks + registry
Crystals up to 24 mm on edge, sharply terminated. Specimen mounted on a fragment of host rock.
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. |
|---|---|---|---|
| 2014-05-24 15:26 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2014-05-29 09:28 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | P.S. |
| 2014-06-11 16:37 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: AMCSD #7457 | P.S. |
| 2014-06-12 14:29 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 25, drawer 28 | L.K. |
| 2016-06-11 11:42 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2018-06-11 14:45 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2020-06-10 14:47 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2022-06-10 08:28 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault C · shelf 25 · drawer 28 · last documented inspection: 2022-06-10 08:28 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-2008-0005 | 2008-07-24 | crystalSystem | trigonal | trigonal (R3̄c) |