AM-2020-10009-A · Sphaleritearchived
physical & structuralrev. 2
| designation | Sphalerite |
|---|---|
| chemical formula | (Zn,Fe)S |
| classification | Sulfide / Sphalerite group |
| crystal system | Cubic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 4.04 |
| colour | Resinous yellow to dark brown |
| type locality | Dzhezkazgan, Karaganda, Kazakhstan |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 273, 347, 618
notessubmitter remarks + registry
Macroscopic appearance consistent with sphalerite; no surface alteration observed at the time of intake.
chain of custody6 events · 3 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. |
|---|---|---|---|
| 2020-12-31 14:00 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2021-01-05 09:11 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | T.J. |
| 2021-01-08 13:28 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: RRUFF R05006 | T.J. |
| 2021-01-10 16:04 UTC | storage | re-bagged, label re-printed; placed in vault B, shelf 11, drawer 23 | T.J. |
| 2023-01-10 12:34 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2025-01-09 10:08 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault B · shelf 11 · drawer 23 · last documented inspection: 2025-01-09 10:08 UTC