Which is characteristic of a mineral?
A.
It must be crystalline and have an indefinite chemical composition.
B.
It must be amorphous and have an indefinite chemical composition.
C.
It must be amorphous and have a definite chemical composition.
D.
It must be crystalline and have a definite chemical composition.
A.
It must be crystalline and have an indefinite chemical composition.
B.
It must be amorphous and have an indefinite chemical composition.
C.
It must be amorphous and have a definite chemical composition.
D.
It must be crystalline and have a definite chemical composition.