Minerals Review

What are minerals primarily composed of?

• Chemical elements

• Water molecules

• Organic compounds

• Gaseous substances

Which mineral is the hardest according to Mohs Hardness Scale?

• Topaz

• Diamond

• Quartz

• Corundum

What is the softest mineral on Mohs Hardness Scale?

• Gypsum

• Talc

• Fluorite

• Apatite

What property describes how light reflects off a mineral's surface?

• Lustre

• Tenacity

• Cleavage

• Fracture

Which mineral is used as a standard for a hardness of 7 on Mohs scale?

• Quartz

• Topaz

• Corundum

• Apatite

What is the term for the color of a mineral in powdered form?

• Shade

• Streak

• Hue

• Tint

Using the Mohs Hardness Scale above answer the following questions as true or false.

1. _____ Apatite would scratch fluorite but not topaz.

• True

• False

8. What are the two main types of luster?

• Metallic

• Glossy

• Nonmetallic

• Pearly

What is a mineral?

• A type of rock formed by high heat and pressure

• inorganic substances that have neatly arranged atoms and a definite composition

• A type of rock formed by volcanoes

• A type of rock formed from sediment

The manner in which a mineral breaks along curved or irregular surfaces

• streak

• cleavage

• fracture