Gypsum

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate. It is widely used in various industries and is known for its easily recognizable crystals, which can grow to be quite large. It can be transparent to opaque and is often found in sedimentary rocks.

Gypsum
Category: Sulfates
Hardness: 2
Specific Gravity: 2.3
Luster: Vitreous to pearly
Transparency: Transparent to translucent
Crystal System: Monoclinic
Cleavage: Perfect in one direction
Fracture: Conchoidal to uneven
Composition: Calcium sulfate dihydrate (CaSO4·2H2O)
Typical Size: Varies widely from small grains to large crystals
Found In:
US United States MX Mexico ES Spain
Uses:
  • Manufacture of plaster
  • Cement production
  • Soil conditioner
  • Filler in various products
  • Jewelry (Selenite)
Gypsum is believed to enhance mental clarity and promote peace of mind. It's often used in meditation and spiritual practices, for its calming effects.