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Quart Diorite

Diorite is a grey to dark grey intermediate intrusive igneous rock composed principally of plagioclase feldspar typically andesine biotite hornblende andor pyroxene. It may contain small amounts of quart microcline and olivine. Zircon apatite sphene magnetite ilmenite and sulfides occur as accessory minerals. It can also be black or bluish

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