Selenite and satin spar are crystal habit varieties of the mineral gypsum.
All varieties of gypsum, including selenite and Satin Spar are composed of calcium sulfate dehydrate, with the chemical formula CaSO4·2H2O.
The main distinguishing characteristics of crystalline gypsum are their softness (hardness 2 on Mohs scale, soft enough to scratch with a fingernail) and their three unequal cleavages. Other distinguishing characteristics include their crystal habits, pearly luster, easy fusibility with loss of water, and solubility in hot dilute hydrochloric acid.
|Size||10mm – 400 mm|
|Chemistry||A variety of Gypsum with the formula CaSO4 · 2H2O.|
|Colors and Variations||White|
|Luster||Vitreous to silky, pearly, or waxy|
|Transparency||Translucent to opaque|
|Crystal habit||Long fibrous|
|Tenacity||Sectile and brittle.|
- Food and Drink
- Medicine and Cosmetics
- Modeling, Sculpture and Art
Bulk in Container and Big Bags in Containers
- satin spar
- desert rose
- gypsum flower