Minerals

The color powder that a mineral leaves behind.

• hardness

• specific gravity

• luster

• streak

How light reflects off of a mineral.

• luster

• streak

• cleavage

• fracture

Why is coal not a mineral?

• It's not a solid
• It is man-made
• It is not inorganic
• It is made of carbon

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

• definite chemical composition
• crystal structure
• naturally occuring
• all of the above

A naturally occurring, inorganic solid with a crystal structure and a definite chemical composition.

• density

• streak

• mineral

• non silicate mineral

A mineral's resistance to being scratched.

• streak

• luster

• hardness

• heft

Breakage along smooth, flat planes.

• fracture

• cleavage

• streak

• ore

Breakage along rough or jagged edges.

• cleavage

• fracture

• streak

• luster

What are the two types of luster? 

• Metallic and Metallic
• Nonmetallic and Shiny
• Metallic and Nonmetallic
• Shiny and Dull

How do you test the streak of a mineral? 

• By scraping some of the mineral onto a streak plate.
• Look for streaks on the mineral.
• Google it. 
• You don't.