Mineral - Chambersite
Chambersite
Chemical Properties
Mineral Class
Borates
Toxicity
none
Formula
Mn₃B₇O₁₃Cl
Unit Cell
Physical Properties
Hardness
7
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
conchoidal,
uneven
Tenacity
Optical Properties
Color
grayredpinkcolorless
Birefringence
0.012
Luster
Vitreous
Transparency
transparent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
orthorhombic-pyramidal - mm2
Space Group
Pca2 1 (29)
Habit
pyramidal, Tetrahedron
Formation
Sedimentary, as evaporite in salt deposits
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Chambersite
Groups and Members
Boracite-Group