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

Question

Quizplus · Accepted Answer

Although well-formed crystal shapes are a common characteristic of minerals, it is not a requirement for something to be considered a mineral. A substance can still be a mineral even if it doesn't have external crystal shapes.

Which Is Not a Requirement? to Be a Mineral It