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Augite

Augite

Release time:22 August 2019
Augite

Type
Mineral

Mineral Classification
Pyroxene

Chemical Formula
8[(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6]

Streak
Light green to colorless

Mohs Hardness
5-6

Crystal System
Monoclinic

Color
Black, brown, greenish, violet-brown; in thin section, colorless to gray

Luster
Vitreous and dull

Fracture
Ranges from splintery to uneven

Description

Augite is a rock-forming mineral of the pyroxene group commonly found within igneous and metamorphic rocks. Because its chemical structure is highly variable, augite might be considered by some to be its own group of minerals rather than an individual mineral. It is also known for its remarkable luster (shine off of a reflective surface).

Uses

Augite is a mineral of interest to geologists, and collectors. While it has little to no industrial value, the presence and development of augite may help tell scientists and geologists about Earth’s history in certain regions.

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