Color: white, reddish, colorless, yellow, gray, or green
Streak: white
Hardness: 6–6 1/2
Specific gravity: 2.55–2.63
Cleavage: perfect, right angles
Fracture: uneven to conchoidal
Luster: vitreous to pearly
Crystal form: none
Transparency: transparent to translucent
Forms in many igneous and metamorphic rocks.
For an explanation of the properties (in bold face), click here >>