How would you tell if a rock is crystalline?
A) It contains crystals that have been cemented together.
B) It does not contain crystals at all.
C) It contains interlocking crystals.
D) It contains all one type of crystal.

Question

Quizplus · Accepted Answer

A crystalline rock contains interlocking crystals, which can be seen with the naked eye or under a microscope. Option A is partially correct, but it implies that the crystals have been added afterwards, which is not necessarily the case. Option B is incorrect, as all rocks contain some degree of crystal structure, even if they are too small to see. Option D is also incorrect, as many common rock types (such as granite) contain multiple types of crystals.

How Would You Tell If a Rock Is Crystalline