hardness of a mineral. structure of a mineral. cleavage of a mineral. luster of a mineral.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A streak plate can be used to determine the
Possibilities:
- hardness of a mineral.
- structure of a mineral.
- cleavage of a mineral.
- luster of a mineral.

hardness of a mineral.