AM-2019-10001-C · Fluorite, anomaly under reviewactive
physical & structuralrev. 4
| designation | Fluorite, anomaly under review |
|---|---|
| chemical formula | CaF₂ |
| classification | Halide / Fluorite group |
| crystal system | Cubic |
| mohs hardness | 4 |
| density (g/cm³) | 3.17 |
| colour | Pink |
| type locality | Dzhezkazgan, Karaganda, Kazakhstan |
raman spectroscopy532 nm · pass C
reported peaks (cm⁻¹): 322, 610, 1013
notessubmitter remarks + registry
Three independent analytical passes have failed to converge on a defect model for this specimen. The 612 cm⁻¹ Raman feature is present, the long-lived photoluminescence component is present, and an anomalous magnetic susceptibility is present, but no published mechanism reconciles all three within a single composition. Record kept open at registrar's discretion.
chain of custody8 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. |
|---|---|---|---|
| 2019-02-20 10:35 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | C.B. |
| 2019-02-25 11:50 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | R.E. |
| 2019-03-09 12:30 UTC | pass B | Raman acquisition; 3 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: COD entry 141608 | R.E. |
| 2019-04-10 08:09 UTC | pass C | x-ray diffraction; powder mount; phase identification against the reference library instrument: PANalytical X'Pert PRO (Cu Kα) ref. checked: RRUFF R05001 | R.E. |
| 2019-04-13 11:31 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 17, drawer 30 | C.B. |
| 2021-04-12 16:18 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2023-04-12 10:35 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
| 2025-04-11 13:00 UTC | re-inspection | seal intact · label legible · no visible degradation | S.W. |
physical location: vault A · shelf 17 · drawer 30 · last documented inspection: 2025-04-11 13:00 UTC