Mineral - Talc
Talc
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
Mg₃[(OH)₂|Si₄O₁₀]
Unit Cell
Physical Properties
Hardness
1
Streak
white
Density
Light (<2)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitegrayyellowgreencolorless
Birefringence
Luster
Greasy,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
triclinic , monoclinic
Point Group
Space Group
Habit
leafy, massive
Formation
Metasomatose, hydrothermal, Metamorphose
Paragenesis
Twinning
Rarity
Very common
Synonyms
Talc