Mineral Name

Gypsum

Chemical Formula

CaSO42H2O

Creator

Preview

Color

colorless, white, gray, yellow, red-brown (from impurities)

Class

Article

Luster

vitreous to silky, pearly or waxy

Diaphaneity

transparent to translucent

Hardness

1.5-2 (Moh's index for 2)

Cleavage

3 directions: {010} Perfect, {100} Distinct, {011} Distinct

Fracture

fracture can be conchoidal or splintery

Density

2.3

Crystal Shape

forms tabular crystals, diamond shaped with edges beveled

Crystal System

Monoclinic

Streaming Media