Mineral - Galkhaite
Galkhaite
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
middle
Formula
(Cs,Tl)(Hg,Cu,Zn)₆(As,Sb)₄S₁₂
Unit Cell
a=10,365 Z=12
Physical Properties
Hardness
3
Streak
orangeyellowyellow orange
Density
Cleavage
Fracture
conchoidal,
uneven
Tenacity
Brittle
Optical Properties
Color
redorange
Birefringence
Luster
Vitreous,
Adamantine
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Space Group
Habit
coarse, massive, Cube
Formation
hydrothermal in Hg-Au-Lagerstätten
Paragenesis
Twinning
Penetrationszwillinge nach {111}
Rarity
Rarely
Synonyms
Galkhaite
Composition
Elements
Mass
Hg
51,7
Cu
3,4
Zn
1,6
Ca
3,3
Tl
0,8
As
14,5
Sb
3,0
S
22,3
Kirgistan
Groups and Members
Galkhait-Gruppe