Mineral - Ushkovite
Ushkovite
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
MgFe³⁺₂(PO₄)₂(OH)₂ · 8H₂O
Unit Cell
Physical Properties
Hardness
1 - 10
Streak
yellow
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
brownorangeyellow
Birefringence
Luster
Vitreous,
Greasy,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
triclinic
Point Group
Space Group
Habit
prismatic, Rhombohedron, tabular
Formation
In granitischen Pegmatiten sekundär aus Triplit
Paragenesis
Twinning
Rarity
Synonyms
Ushkovite