Mineral - Robinsonite
Robinsonite
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
middle
Formula
Pb₄Sb₆S₁₃
Unit Cell
Physical Properties
Hardness
2.5 - 3
Streak
gray
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
blackgray
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
Space Group
Habit
crusty, massive, acicular
Formation
hydrothermal
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Robinsonite