AM-2026-00018-A · Sphalerite (Zn,Fe)Sarchived
physical & structuralrev. 1
| designation | Sphalerite (Zn,Fe)S |
|---|---|
| chemical formula | (Zn,Fe)S |
| classification | Sulfide / Sphalerite group |
| crystal system | Cubic |
| mohs hardness | 3.5 – 4 |
| density (g/cm³) | 3.9 – 4.1 |
| colour | Yellow-brown to black |
| type locality | Bayan Obo, Inner Mongolia, China |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 276, 351
notessubmitter remarks + registry
Tetrahedral crystals of dark brown to black colouration with resinous to submetallic lustre on cleavage surfaces. Submitted as part of a small consignment of Bayan Obo material; locality recorded to deposit level only.
chain of custody4 events · 1 seal-break
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. |
|---|---|---|---|
| 2026-09-11 12:55 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | C.B. |
| 2026-09-16 16:01 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | L.K. |
| 2026-09-20 14:13 UTC | pass B | Raman acquisition; 2 peaks above prominence threshold instrument: Renishaw inVia (532 nm) ref. checked: ICDD card 04-4078 | L.K. |
| 2026-09-23 08:36 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 11, drawer 36 | C.B. |
physical location: vault C · shelf 11 · drawer 36 · last documented inspection: 2026-09-23 08:36 UTC