AM-2011-10017-A · Cassiteritearchived
physical & structuralrev. 2
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 7.00 |
| colour | Brown to black, adamantine |
| type locality | Toroku mine, Miyazaki, Japan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 476, 632, 775
notessubmitter remarks + registry
Standard cassiterite reference specimen. Supplied as a single piece on a small fragment of host 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. |
|---|---|---|---|
| 2011-01-30 10:43 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2011-02-01 08:18 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | R.E. |
| 2011-02-11 09:55 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: RRUFF R05001 | R.E. |
| 2011-02-12 16:29 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 04, drawer 06 | T.J. |
| 2013-02-11 12:17 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2015-02-11 16:02 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2017-02-10 11:14 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2019-02-10 09:47 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault A · shelf 04 · drawer 06 · last documented inspection: 2019-02-10 09:47 UTC