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Minerals - Grandidierite | TerraCollect
Mineral - Grandidierite
Grandidierite
(Mg,Fe²⁺)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Mg,Fe²⁺)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂
Unit Cell
Physical Properties
Hardness
7.5
Streak
white
Density
Normal (2-3,5)
Optical Properties
Color
green
blue
Birefringence
Luster
Vitreous,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Cleavage
Fracture
Tenacity
Space Group
Habit
coarse,
massive,
prismatic
Formation
Metamorphose, Magmatisch
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Grandidierite
