Augite - Simple English Wikipedia, the free encyclopedia

Augite
General
Category	Silicate mineral
Formula (repeating unit)	(Ca,Mg,Fe)SiO3
Identification
Color	Pale brown to purplish or greenish brown, also dark grey sometimes
Crystal system	Monoclinic
Cleavage	{110} good
Fracture	uneven
Mohs scale hardness	5 to 6.5
Luster	Vitreous
Streak	Greenish-white
Specific gravity	3.19 - 3.56
Refractive index	α = 1.671 - 1.735, β = 1.672 - 1.741, γ = 1.703 - 1.774

Augite is a mineral. The mineral's name comes from the Greek word augites, meaning "brightness". However, augites only look shiny some of the time. Most augites have a dull (dark green, brown or black) color. Augite is a pyroxene.

• List of minerals

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