AM-2013-10001-B · Fluorite, anomaly under reviewunverified
The classification below is preliminary. Spectroscopic confirmation is incomplete; values shown reflect the most recent analytical pass and may be revised without notice.
physical & structuralrev. 5
| designation | Fluorite, anomaly under review |
|---|---|
| chemical formula | CaF₂ |
| classification | Halide / Fluorite group |
| crystal system | Cubic |
| mohs hardness | 4 |
| density (g/cm³) | 3.18 |
| colour | Faintly green, transparent |
| type locality | Rio Marina, Elba, Italy |
raman spectroscopy532 nm · pass B
reported peaks (cm⁻¹): 321
notessubmitter remarks + registry
Photoluminescence decay measurements after 365 nm excitation show a long-lived component (τ ≈ 18 s) inconsistent with intrinsic defect emission for this composition. The amplitude of the long-lived component is reproducible across cooling cycles to 77 K. Decay parameters do not depend on excitation power within the tested range.
chain of custody8 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. |
|---|---|---|---|
| 2013-02-11 14:49 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | P.S. |
| 2013-02-16 13:26 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | R.E. |
| 2013-02-23 16:22 UTC | pass B | Raman acquisition; 1 peak above prominence threshold instrument: Renishaw inVia (785 nm) ref. checked: AMCSD #9296 | R.E. |
| 2013-02-25 13:15 UTC | storage | re-bagged, label re-printed; placed in vault A, shelf 04, drawer 21 | P.S. |
| 2015-02-25 13:11 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2017-02-24 14:10 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2019-02-24 14:23 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
| 2021-02-23 09:56 UTC | re-inspection | seal intact · label legible · no visible degradation | P.S. |
physical location: vault A · shelf 04 · drawer 21 · last documented inspection: 2021-02-23 09:56 UTC