Environmental Sciences, asked by soham607, 11 months ago

What igneous rocks are porphyritic?

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Answered by Anonymous

Answer:

Porphyritic texture is a very common texture in igneous rocks in which larger crystals (phenocrysts) are embedded in a fine-grained groundmass.

Porphyry is an igneous rock that contains larger crystals (phenocrysts) in a fine-grained groundmass. ...

Porphyry contains large crystals in the fine-grained matrix.

Answered by Anonymous

Answer:

Rocks are said to be porphyritic if their groundmass is fine-grained ar aphanitic and porphyraceous if their groundmass in visible to the naked eye. Hence, rhyolite and basalt as fine-grained volcanic rocks are porphyritic and granite, syenite, etc.

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