Talc
ID: 59
Talc
Chemical Formula
Mg₃Si₄O₁₀(OH)₂
Hardness (Mohs)
1
Crystal System
Monoclinic
Streak
White
Luster
Pearly to Greasy
Diaphaneity
Translucent to Opaque
Color
White, Gray, Pale green, Pink, Yellowish
Crystal Habit / Mode of Occurrence
Foliated, Massive, Compact (steatite), Fibrous.
Fun Facts
Talc is the softest mineral on the Mohs scale of hardness. Its softness and greasy feel make it ideal for powders and lubricants. Common Uses: Talcum powder, Ceramics, Paper, Paints, Cosmetics, Carvings (soapstone).