Mineral - Valleriite
Valleriite
Chemical Properties
Mineral Class
Sulfides and sulfosalts
Toxicity
none
Formula
(Fe²⁺,Cu)₄(Mg,Al)₃S₄(OH,O)₆
Unit Cell
Physical Properties
Hardness
1 - 1.5
Streak
black
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
grayyellowbronze
Birefringence
Luster
Metallic
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
hexagonal
Point Group
Space Group
Habit
coarse, fibrous, massive, acicular
Formation
Sekundär (aus Chalkopyrit)
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Valleriite