Mineral - Minyulite
Minyulite
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
KAl₂(PO₄)₂F · 4H₂O
Unit Cell
Physical Properties
Hardness
1 - 10
Streak
white
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
whitegrayyellowgreencolorless
Birefringence
Luster
Vitreous,
Silky
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
coarse, crusty, spherical, massive, acicular, prismatic, radial
Formation
Sekundär aus glaukonitischem, phosphathaltigem Eisenstein
Paragenesis
Twinning
Rarity
Synonyms
Minyulite