AM-2019-10006-A · Sphaleritearchived
physical & structuralrev. 1
| 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 | Honey brown |
| type locality | Cerro Rico, Potosí, Bolivia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 347, 620, 662
notessubmitter remarks + registry
Crystals up to 16 mm on edge, sharply terminated. On dolomite matrix.
chain of custody7 events · 4 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. |
|---|---|---|---|
| 2019-01-14 12:30 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | L.K. |
| 2019-01-18 08:00 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | N.P. |
| 2019-01-30 08:54 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: ICDD card 04-8737 | N.P. |
| 2019-01-31 15:22 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 11, drawer 21 | L.K. |
| 2021-01-30 10:36 UTC | re-inspection | seal intact · label legible · no visible degradation | M.A. |
| 2023-01-30 08:18 UTC | re-inspection | seal intact · label legible · no visible degradation | M.A. |
| 2025-01-29 10:22 UTC | re-inspection | seal intact · label legible · no visible degradation | M.A. |
physical location: vault C · shelf 11 · drawer 21 · last documented inspection: 2025-01-29 10:22 UTC
errata · corrections of record1 entry
The following corrections have been issued for this record since accession. Original values are retained here for citation purposes; the canonical metadata above reflects the most recent correction.
| id | issued | field | was | now |
|---|---|---|---|---|
| ERR-2016-0001 | 2016-01-13 | color | white | milky white, occasionally translucent |