Mineral - Shigaite
Shigaite
Chemical Properties
Mineral Class
Sulphates
Toxicity
none
Formula
Mn₆Al₃(OH)₁₈[Na(H₂O)₆](SO₄)₂ · 6H₂O
Unit Cell
Physical Properties
Hardness
2
Streak
whiteyellowyellow white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
brownorangeyellow
Birefringence
Luster
Vitreous
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
trigonal
Point Group
Space Group
Habit
leafy, rosette, tabular
Formation
Metamorphose
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Shigaite