3-11 Practice

How light reflects off of a mineral is called?

• luster
• streak
• cleavage
• fracture

Occurs when a mineral breaks along a smooth, flat surface

• cleavage
• fracture
• streak
• luster

The color of a mineral in powder form is called?

• hardness
• specific gravity
• luster
• streak

A mineral which contains a useful substance is call a/an?

• gem
• quarry
• ore
• rock

The outward appearance of the atomic arrangement of elements in minerals is called?

• cleavage
• crystal
• hardness
• streak

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

By definition, a mineral has which of the following characteristic(s)?

• chemical composition
• crystalline structure
• natural
• all of the above

Can a penny scratch fluorite?

• Yes 
• No 

Using this scale, which mineral can scratch fluorite?

• Talc 
• Gypsum 
• Apatite 
• Calcite 

A rock that contains an metal or other economially useful mineral is called a(n)

• ore
• gem
• fossil fuel
• gemstone