Bronzitite (orthopyroxenite) 

A bronzitite is an orthopyroxenite dominated by the mineral hypersthene. Almost all of the grains in this photomicrograph are hypersthene. This rock also contains some interstitial plagioclase.

UNC sample

PP-12

Rock type

bronzitite (orthopyroxenite)

Locality

Stillwater complex, MT