AUGITE

Luster: Nonmetallic
Lab Book Description:
Hardness: 5.5 to 6
Color dark green to gray; Forms short, 8-sided prisms; Two good cleavages that intersect at 87 and 93 degrees (nearly right angles); Specific Gravity = 3.2 to 3.5
Streak: White to pale gray
augite1 augite2

Appears on these flash cards: 2 planes of cleavage; hardness of > 5.5 (greater than 5.5)