Template:Igneous rocks - OilfieldWiki

Igneous rocks by composition

Type	Ultramafic < 45% SiO₂	Mafic 45-52% SiO₂	Intermediate 52–63% SiO₂	Intermediate-Felsic 63–69% SiO₂	Felsic >69 % SiO₂

Volcanic rocks: Subvolcanic rocks: Plutonic rocks:	Komatiite Kimberlite, Lamproite Peridotite	Basalt Diabase (Dolerite) Gabbro	Andesite Diorite	Dacite Granodiorite	Rhyolite Aplite—Pegmatite Granite

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