AM-2009-10009-A · Cassiteriteunverified
The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 4
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 6.99 |
| colour | Sherry-brown on edges |
| type locality | Kongsberg, Buskerud, Norway |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 475, 632, 776
notessubmitter remarks + registry
Macroscopic appearance consistent with cassiterite; no surface alteration observed at the time of intake.
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. |
|---|---|---|---|
| 2009-10-26 15:07 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | N.P. |
| 2009-10-30 13:02 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2009-11-09 16:06 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-1640 | H.D. |
| 2009-11-11 16:16 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 11, drawer 11 | N.P. |
| 2011-11-11 14:25 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2013-11-10 14:28 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2015-11-10 15:35 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
| 2017-11-09 14:01 UTC | re-inspection | seal intact · label legible · no visible degradation | L.K. |
physical location: vault D · shelf 11 · drawer 11 · last documented inspection: 2017-11-09 14:01 UTC