Minerals

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

• luster
• streak
• cleavage
• fracture

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

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

How do you test the hardness of a mineral? 

• Throw it against a wall
• Step on it
• Scratch Test
• Kick it until it breaks

A naturally occurring, inorganic solid with a crystal structure and a definite chemical composition is referring to

• density
• streak
• mineral
• non silicate mineral

What mineral is the softest mineral on Moh's Hardness Scale and the main ingredient in baby powder?

• feldspar
• talc
• gypsum
• kaolinite

The mineral in the picture has a ____________ luster.

• Nonmetallic
• Metallic
• Pearly
• Earthy

A mineral breaks into pieces like are shown in the picture. How would you describe its breakage?

• Fracture
• Cleavage
• Glassy
• Waxy

A mineral breaks into pieces like are shown in the picture. How would you describe its breakage?

• Fracture
• Cleavage
• Glassy
• Waxy

Which mineral property is being shown here?

• luster
• hardness
• cleavage
• streak

Refer to the Mohs Hardness Scale. A mineral with a hardness of 7 can scratch -

• orthoclase feldspar, but cannot scratch talc
• calcite, but cannot scratch apatite.
• topaz, but cannot scratch fluorite
• gypsum, but cannot scratch corundum