AM-2011-10015-A · Cassiteritearchived
physical & structuralrev. 1
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 6.98 |
| colour | Sherry-brown on edges |
| type locality | Långban, Värmland, Sweden |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 473, 633, 777
notessubmitter remarks + registry
Submitter cited the type locality. Specimen retained for reference; no chain-of-custody documentation available beyond the submission packet.
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. |
|---|---|---|---|
| 2011-02-10 14:57 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2011-02-14 08:11 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2011-02-26 12:23 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: AMCSD #4060 | T.J. |
| 2011-03-01 11:34 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 26, drawer 29 | V.O. |
| 2013-02-28 08:53 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2015-02-28 16:48 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2017-02-27 11:14 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2019-02-27 12:10 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault D · shelf 26 · drawer 29 · last documented inspection: 2019-02-27 12:10 UTC