Which is not a requirement? To be a mineral it must be or have_________ .
A) naturally occurring
B) orderly regular atomic or ionic structure
C) definite chemical composition
D) well formed external crystal shapes

Question

Quizplus · Accepted Answer

Minerals must be naturally occurring, have an orderly atomic structure, and a definite chemical composition. Well-formed external crystal shapes are not a requirement for a substance to be classified as a mineral, as many minerals do not form well-defined crystals visible to the naked eye.

Which Is Not a Requirement? to Be a Mineral It