Axinite, Axinite Information, Axinite Wiki


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Axinite
Axinite from California
General
Category	Mineral
Chemical formula	calcium aluminum boro-silicate, (Ca,Fe,Mn)₃Al₂BO₃Si₄O₁₂OH or Ca₂(Fe,Mn)Al₂BSi₄O₁₅(OH)
Identification
Color	Reddish brown to yellow to colorless. Blue, violet, grey.
Crystal habit	Tabular, wedge shaped crystal
Crystal system	Triclinic
Cleavage	Good
Fracture	Conchoidal
Mohs Scale hardness	6.5-7
Luster	Vitreous
Refractive index	1.68-1.723
Pleochroism	Strong
Streak	White
Specific gravity	3.26-3.41

Axinite is a brown to violet-brown, or reddish-brown bladed mineral composed of calcium aluminum boro-silicate, (Ca,Fe,Mn)₃Al₂BO₃Si₄O₁₂OH. Axinite is pyroelectric and piezoelectric.

Axinite from California

Axinite

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