Mineral - Botallackite
Botallackite
Chemical Properties
Mineral Class
Halides
Toxicity
none
Formula
Cu₂(OH)₃Cl
Unit Cell
Physical Properties
Hardness
4.5
Streak
whitegreengreen white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
green
Birefringence
0.071
Luster
Vitreous,
Pearly
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
P2 1 /m (11)
Habit
acicular
Formation
Oxidation zone of copper deposits (which contain chlorine or had chlorine added by seawater)
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Botallackite
Groups and Members
Atacamite-Group