Mineral - Sekaninaite
Sekaninaite
Chemical Properties
Mineral Class
Silicates
Toxicity
none
Formula
(Fe,Mg)₂Al₃(AlSi₅O₁₈)
Unit Cell
Physical Properties
Hardness
7.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
browngrayblueviolet
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
leafy, coarse, massive, prismatic, tabular
Formation
Magmatisch, Metamorphose
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Sekaninaite