AM-2019-10011-A · Cassiteritearchived
physical & structuralrev. 2
| designation | Cassiterite |
|---|---|
| chemical formula | SnO₂ |
| classification | Oxide / Rutile group |
| crystal system | Tetragonal |
| mohs hardness | 6 – 7 |
| density (g/cm³) | 6.98 |
| colour | Brown to black, adamantine |
| type locality | Mogok, Mandalay, Myanmar |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 476, 633, 775
notessubmitter remarks + registry
Standard cassiterite reference specimen. Supplied as a single piece on a small fragment of host matrix.
chain of custody7 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. |
|---|---|---|---|
| 2019-10-16 14:10 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2019-10-18 11:43 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | S.W. |
| 2019-10-28 11:17 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: RRUFF R05008 | S.W. |
| 2019-10-30 09:41 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 25, drawer 28 | T.J. |
| 2021-10-29 15:42 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2023-10-29 08:57 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
| 2025-10-28 15:15 UTC | re-inspection | seal intact · label legible · no visible degradation | N.P. |
physical location: vault C · shelf 25 · drawer 28 · last documented inspection: 2025-10-28 15:15 UTC