Kalsilite
Vitreous white to grey feldspathoidal mineral
From Wikipedia, the free encyclopedia
Kalsilite (KAlSiO4) is a vitreous white to grey feldspathoidal mineral that is found in some potassium-rich lavas, such as from Chamengo Crater in Uganda. It has a relative hardness of 5.5.
| Kalsilite | |
|---|---|
| |
| General | |
| Category | Tectosilicate minerals |
| Group | Feldspathoid group |
| Formula | KAlSiO4 |
| IMA symbol | Kls[1] |
| Crystal system | Hexagonal |
| Crystal class | 6 2 2 – Trapezohedral |
| Space group | P6322 (no. 182) |
| Identification | |
| Color | Colorless, white, gray |
| Tenacity | Brittle |
| Mohs scale hardness | 6 |
| Luster | Vitreous, greasy |
| Streak | White |
| Diaphaneity | Transparent, Translucent |
| Specific gravity | 2.59–2.62 |
| References | [2] |
