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Mineralpedia Details for Augite

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Augite

Augite

Formula
(Ca,Mg,Fe)2(Si,Al)2O6 
Crystal System
Monoclinic 
Crystal Habit
Massive - Fibrous, Columnar, Granular 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
brown green, green, light brown, dark brown, black 
Streak
greenish gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
5-6.5 
WebMineral
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Mindat
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Augite from Halliburton Co., Ontario, Canada

Augite
            from Halliburton Co., Ontario, Canada

Large impressive, well-formed light green and terminated crystal. Hard to find a bigger one of these guys!

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