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Minerals - Prismatine | TerraCollect
Mineral - Prismatine
Prismatine
(Fe,Mg)(Mg,Al,Fe)â‚…Alâ‚„Siâ‚‚(Si,Al)â‚‚(B,Si,Al)(O,OH,F)â‚‚â‚‚
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Fe,Mg)(Mg,Al,Fe)â‚…Alâ‚„Siâ‚‚(Si,Al)â‚‚(B,Si,Al)(O,OH,F)â‚‚â‚‚
Unit Cell
Physical Properties
Hardness
6.5 - 7
Streak
white
Density
Normal (2-3,5)
Optical Properties
Color
gray
green
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Cleavage
Fracture
Tenacity
Space Group
Habit
prismatic
Formation
Metamorphose
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Prismatine
