Question

which statement names characteristics of a mineral? o it must be crystalline and have an indefinite chemical composition. o it must be crystalline and have a definite chemical composition. o it must be amorphous and have a definite chemical composition. o it must be amorphous and have an indefinite chemical composition.

Explanation:

Minerals are crystalline solids with a definite chemical composition. Crystalline refers to an ordered atomic - scale structure, and a definite chemical composition means the ratio of elements is fixed. Amorphous substances lack this ordered structure.

Answer:

It must be crystalline and have a definite chemical composition.