AM-2019-10014-A · Beryl, var. aquamarinearchived
physical & structuralrev. 2
| designation | Beryl, var. aquamarine |
|---|---|
| chemical formula | Be₃Al₂Si₆O₁₈ |
| classification | Cyclosilicate / Beryl group |
| crystal system | Hexagonal |
| mohs hardness | 7.5 – 8 |
| density (g/cm³) | 2.67 |
| colour | Sea blue, transparent |
| type locality | Mogok, Mandalay, Myanmar |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 321, 684, 1011, 1069
notessubmitter remarks + registry
Standard beryl reference specimen. Supplied as a single piece on a small fragment of host 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. |
|---|---|---|---|
| 2019-04-05 15:17 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | T.J. |
| 2019-04-10 15:36 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | H.D. |
| 2019-04-14 15:10 UTC | pass B | Raman acquisition; 4 peaks above prominence threshold instrument: Horiba LabRAM HR (532 nm) ref. checked: ICDD card 04-4017 | H.D. |
| 2019-04-17 13:38 UTC | storage | re-bagged, label re-printed; placed in vault D, shelf 26, drawer 10 | T.J. |
| 2021-04-16 09:50 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2023-04-16 14:12 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
| 2025-04-15 13:05 UTC | re-inspection | seal intact · label legible · no visible degradation | C.B. |
physical location: vault D · shelf 26 · drawer 10 · last documented inspection: 2025-04-15 13:05 UTC