AM-2013-10001-A · Cassiteritearchived
physical & structuralrev. 3
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 6.99 |
| colour | Pale sherry-brown on edges |
| type locality | Kashio mine, Nagano, Japan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 474, 632, 775
notessubmitter remarks + registry
Photographic record retained. Routine intake; no anomalies noted.
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. |
|---|---|---|---|
| 2013-06-27 16:01 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | C.B. |
| 2013-07-01 10:19 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | M.A. |
| 2013-07-14 09:22 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: RRUFF R05007 | M.A. |
| 2013-07-15 15:20 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 13, drawer 15 | C.B. |
| 2015-07-15 12:48 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2017-07-14 12:06 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2019-07-14 11:00 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
| 2021-07-13 16:29 UTC | re-inspection | seal intact · label legible · no visible degradation | V.O. |
physical location: vault D · shelf 13 · drawer 15 · last documented inspection: 2021-07-13 16:29 UTC