Mineral - Caledonite
Caledonite
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
Pb₅Cu₂[(OH)₆|CO₃|(SO₄)₃]
Unit Cell
Physical Properties
Hardness
2.5 - 3
Streak
whitegreengreen white
Density
Heavy (3,5-6)
Cleavage
Fracture
Tenacity
Brittle
Optical Properties
Color
greenblue
Birefringence
0.091
Luster
Vitreous,
Greasy,
Resinous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
orthorhombic-pyramidal - mm2
Space Group
Pmn2 1 (31)
Habit
tufty, acicular, prismatic
Formation
Oxidation zone of copper and lead deposits
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Caledonite