Mineral Identification

The color of a mineral in powder form is called the mineral's 

• hardness
• specific gravity
• luster
• streak

How light reflects off of a mineral is called the mineral's 

• luster
• streak
• cleavage
• fracture

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

Which test is not reliable in identifying minerals

• streak
• luster
• specific gravity
• color

Breakage along smooth, flat planes

• fracture
• cleavage
• streak
• ore

Breakage along rough or jagged edges

• cleavage
• fracture
• streak
• luster

Metallic and nonmetallic are two examples of the physical property _______________.

• streak
• color
• luster
• cleavage

Which of these minerals is softer than glass?

• Topaz 
• Corundum 
• Calcite 
• Orthoclase 

Can a glass plate scratch apatite?

• Yes 
• No 

Can a penny scratch fluorite?

• Yes 
• No