Question

which are considered two of the special properties that are used to identify certain minerals?

• hardness and luster
• magnetism and fluorescence
• streak and color
• cleavage and fracture

Explanation:

Hardness and luster are common but not special properties. Streak and color are basic identification properties. Cleavage and fracture are also common identification features. Magnetism and fluorescence are special properties as they are not present in most minerals and can be used to identify specific minerals.

Answer:

magnetism and fluorescence