Olivine / Dunite

Produced by CQUniversity. Dunite is an igneous, plutonic rock, of ultramafic composition, with coarse-grained or phaneritic texture. The mineral assemblage is greater than 90% olivine, with minor amounts of other minerals such as pyroxene, chromite, magnetite, and pyrope. Dunite is the olivine-rich end-member of the peridotite group of mantle-derived rocks. Dunite and other peridotite rocks are considered the major constituents of the Earth's mantle above a depth of about 400 kilometers. Dunite typically undergoes retrograde metamorphism in near-surface environments and is altered to serpentinite and soapstone. Produced by CQUniversity. [More information on Olivine](https://www.mindat.org/min-2983.html) can be found on Mindat.