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Minerals - Pyrargyrite | TerraCollect
Mineral - Pyrargyrite
Pyrargyrite
Ag₃SbS₃
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
none
Formula
Ag₃SbS₃
Unit Cell
a=11.05 c=8.72 Z=6
Physical Properties
Hardness
2.5
Streak
red
Density
Heavy (3,5-6)
Optical Properties
Color
black
red
Birefringence
0.203
Luster
Adamantine
Transparency
translucent,
transparent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
trigonal
Composition
Elements
Mass
Ag
59.82
Sb
22.00
As
0.08
S
17.82
Romania (Palache et al. 1952)
Groups and Members
Proustite-Group
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Distinct after {1011}, imperfect after {01
1
2}
Fracture
conchoidal,
uneven
Tenacity
Brittle
Point Group
ditrigonal-pyramidal - 3m
Space Group
R3c (161)
Habit
prismatic,
pyramidal,
Rhombohedron,
tabular
Formation
(1) Primary hydrothermal as late-magmatic precipitation in low- to medium-temperature veins. (2) Secondary supergene through enrichment in the oxidation and cementation zones of silver deposits under the influence of antimony-bearing solutions
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Pyrargyrite
