How Would You Tell If A Rock Is Crystalline?
How Would You Tell If A Rock Is Crystalline? Crystalline rock, any rock composed entirely of crystallized minerals without glassy matter. Intrusive igneous rocks—those that congeal at depth—are virtually always crystalline, whereas extrusive igneous rocks, or volcanic rocks, may be partly to entirely glassy. How can you tell if a rock is crystalline? Crystalline rock,