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Minerals - Cobaltite | TerraCollect
Mineral - Cobaltite
Cobaltite
CoAsS
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
middle
Formula
CoAsS
Unit Cell
a=5.583 b=5.589 c=5.581 Z=4
Physical Properties
Hardness
5.5
Streak
black
gray
gray black
Optical Properties
Color
gray
silver
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Composition
Elements
Mass
Co
28.64
Fe
4.11
Ni
3.06
As
44.77
S
19.34
Canada (Palache et al. 1952)
Groups and Members
Cobaltite-Group
Density
Very Heavy (>6)
Cleavage
Perfect after {001}
Fracture
uneven
Tenacity
Brittle
orthorhombic-pyramidal - mm2
Space Group
Pca2
1
(29)
Habit
Deltoidal icositetrahedron,
dodecahedron,
Cube
Formation
hydrothermal, Metasomatism
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Cobaltite
