Definition
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Etymology
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Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites
From the name of a professor, Alois Wehrle
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock