AM-2015-10022-A · Topazarchived
physical & structuralrev. 1
| designation | Topaz |
|---|---|
| chemical formula | Al₂SiO₄(F,OH)₂ |
| classification | Nesosilicate |
| crystal system | Orthorhombic |
| mohs hardness | 8 |
| density (g/cm³) | 3.55 |
| colour | Pale pale yellow |
| type locality | Kongsberg, Buskerud, Norway |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 267, 291, 402
notessubmitter remarks + registry
Standard topaz reference specimen. Supplied as a single piece on a small fragment of host matrix.