AM-2013-10015-A · Gypsumarchived
physical & structuralrev. 3
| designation | Gypsum |
|---|---|
| chemical formula | CaSO₄·2H₂O |
| classification | Sulfate |
| crystal system | Monoclinic |
| mohs hardness | 1.5 – 2 |
| density (g/cm³) | 2.31 |
| colour | Milky white |
| type locality | Erongo Mountains, Erongo, Namibia |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 414, 493, 669, 1007
notessubmitter remarks + registry
Photographic record retained. Single-pass examination only; no follow-up planned.