AM-2018-10001-B · Apatite-(CaF), 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. 2
| designation | Apatite-(CaF), anomaly under review |
|---|---|
| chemical formula | Ca₅(PO₄)₃F |
| classification | Phosphate / Apatite supergroup |
| crystal system | Hexagonal |
| mohs hardness | 5 |
| density (g/cm³) | 3.20 |
| colour | Sea blue |
| type locality | South Crofty mine, Cornwall, England |
raman spectroscopy532 nm · pass B
reported peaks (cm⁻¹): 429, 590, 611, 961, 1044
notessubmitter remarks + registry
Cathodoluminescence imaging reveals a faint regular pattern of bright bands at approximately 90 nm spacing, visible only in the (001) section. The pattern is invariant under specimen rotation and does not correlate with chemical zoning by EDX. No identification of the underlying ordering has been advanced.
chain of custody7 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. |
|---|---|---|---|
| 2018-11-30 12:52 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | P.S. |
| 2018-12-02 16:15 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2018-12-17 11:06 UTC | pass B | Raman acquisition; 5 peaks above prominence threshold instrument: Renishaw inVia (532 nm, low-power head) ref. checked: COD entry 198270 | H.D. |
| 2018-12-18 09:11 UTC | storage | re-bagged, label re-printed; placed in vault C, shelf 16, drawer 04 | P.S. |
| 2020-12-17 11:31 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2022-12-17 11:04 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2024-12-16 11:57 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault C · shelf 16 · drawer 04 · last documented inspection: 2024-12-16 11:57 UTC