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Minerals - Kröhnkite | TerraCollect
Mineral - Kröhnkite
Kröhnkite
Na₂Cu(SO₄)₂ · 2H₂O
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
Na₂Cu(SO₄)₂ · 2H₂O
Unit Cell
Physical Properties
Hardness
2.5 - 3
Streak
white
Density
Normal (2-3,5)
Optical Properties
Color
green
blue
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Cleavage
Fracture
Tenacity
Space Group
Habit
coarse,
fibrous,
crusty,
prismatic
Formation
Oxidationszone von Kupfer-Lagerstätten
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Kröhnkite
