Physical Properties of Minerals

Which mineral property is determined by observing the color of its powder?

• Luster

• Hardness

• Streak

• Cleavage

The least useful property when identifying minerals is

• Streak
• Luster
• Color

What is the term for a mineral's ability to glow under ultraviolet light?

• Fluorescence

• Luster

• Cleavage

• Streak

Which mineral is known for its ability to be split into thin sheets?

• Calcite

• Feldspar

• Mica

• Quartz

A naturally formed, inorganic solid that has a crystalline structure is a

• Sulfide
• Sulfate
• Mineral
• Element

What is the term for the color of a mineral's surface in reflected light?

• Streak

• Luster

• Hardness

• Cleavage

What is the softest mineral on the Mohs Hardness Scale?

• Diamond
• Gypsum
• Topaz
• Talc

What is the term for a mineral's resistance to being scratched?

• Luster

• Hardness

• Cleavage

• Fracture

Which mineral property is being shown here?

• luster
• hardness
• streak

_____ is how light bounces off of a mineral.

• Color
• Hardness
• Luster 
• Streak