Mineral - Glaucodot
Glaucodot
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
low
Formula
(Co₀,50Fe₀,50)AsS
Unit Cell
a=14,16 b=5,65 c=3,32 Z=6
Physical Properties
Hardness
5
Streak
black
Density
Very Heavy (>6)
Cleavage
Vollkommen auf (010), gut auf (101)
Fracture
uneven
Tenacity
Brittle
Optical Properties
Color
blackgraygray blacksilver
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
blocky, dipyramidal, Octahedron, prismatic, tabular
Formation
hydrothermal, bei hohen PT-Bedingungen
Paragenesis
Twinning
Nach (101) und sternförmige Durchdringungszwillinge nach (012)
Rarity
Rarely
Synonyms
Glaucodot
Composition
Elements
Mass
Co
16,67
Fe
19,62
Ni
0,01
As
44,10
S
20,20
0,23
Schweden
Groups and Members
Arsenopyrit-Gruppe