Mineral - Semseyite
Semseyite
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
middle
Formula
Pb₉Sb₈S₂₁
Unit Cell
Physical Properties
Hardness
2.5
Streak
black
Density
Very Heavy (>6)
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackgray
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
prismatic, rosette, tabular
Formation
hydrothermal
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Semseyite