Is porphyry a granite?
Category: Question and Answer
Updated: 2023/11/8
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Views: 422 Likes: 116
Reference Answer
Porphyry is a type of volcanic igneous rock, which along with granite and other rock formations, make up approximately 95 of the world's “crust.” It is different than granite and is made up of over 70 silica, about 14 alumna, 8 alkali and small percentages of iron, calcium and magnesium.
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