Augite / RU Geology / by Grace Psenicska

Description

# Augite's Physical Properties 1. Color: **dark green, black, brown** 2. Streak: **white, gray, very pale green** 3. Luster: **Vitreous on cleavage and crystal faces; Dull on other surfaces** 4. Cleavage/Fracture: **2 cleavage planes intersecting at angles of slightly less than 90 degrees** 5. Hardness: **5.5-6** 6. Specific Gravity: **3.2-3.6** 7. Tenacity: **Brittle** 8. Texture: **Gritty**