Mineral - Khaidarkanite
Khaidarkanite
Chemical Properties
Mineral Class
Halides
Toxicity
none
Formula
Cu₄Al₃(OH)₁₄F₃ · 2H₂O
Unit Cell
a=12,35 b=2,91 c=10,37 β=98° Z=1
Physical Properties
Hardness
2.5
Streak
blue
Density
Normal (2-3,5)
Cleavage
nd
Fracture
nd
Tenacity
nd
Optical Properties
Color
blue
Birefringence
0,063
Luster
Vitreous
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
coarse, fibrous, crusty, massive, acicular
Formation
Oxidationszone von Fluorit-haltigen Kupfer-Lagerstätten
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Khaidarkanite
Composition
Elements
Mass
Na₂O
1,6
CuO
46,1
Al₂O₃
22,4
SiO₂
0,8
SO₃
2,3
H₂O
22,3
F
8,1
Kirgistan
Groups and Members
Cyanotrichit-Gruppe