AM-2026-00022-A · Kyanitearchived
physical & structuralrev. 1
| designation | Kyanite |
|---|---|
| chemical formula | Al₂SiO₅ |
| classification | Nesosilicate / Al₂SiO₅ polymorph |
| crystal system | Triclinic |
| mohs hardness | 4.5 – 7 (anisotropic) |
| density (g/cm³) | 3.59 |
| colour | Pale to deep blue, less commonly green |
| type locality | Linwu, Hunan, China |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 295, 387, 639, 902
notessubmitter remarks + registry
Bladed crystals of pale to medium blue colouration with vitreous lustre on the pinacoidal faces. Hardness anisotropy noted on the elongation axis consistent with published values. Submitted as part of a small consignment of Linwu material; locality recorded to county level only.
chain of custody2 events · 0 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. |
|---|---|---|---|
| 2026-10-17 08:30 UTC | intake | weighed, dimensioned, photographed; container sealed and labelled with the accession identifier | V.O. |
| 2026-10-18 15:16 UTC | pass A | visual inspection · density (Archimedes) · mass to ±0.01 g | C.B. |
physical location: vault D · shelf 16 · drawer 07 · last documented inspection: 2026-10-18 15:16 UTC