Minerals Properties and Uses

What is the chemical formula of Calcite?

• CaCO3

• NaCl

• SiO2

• H2O

Calcite belongs to which crystal system?

• Cubic

• Trigonal

• Hexagonal

• Orthorhombic

What is the color of pure Calcite?

• Red

• Blue

• Colorless

• Green

Copper's color can tarnish to a reddish-brown. True or False?

• True

• False

On the Mohs scale, what is the hardness of Fluorite?

• 2

• 4

• 6

• 8

What is the color of Galena?

• Metallic gray

• Silver

• Gold

• Black

What color is graphite typically?

• Red

• Blue

• Black to gray

• White

Graphite is a good conductor of ______.

• Heat

• Electricity

• Sound

• Light

What is the chemical formula for Gypsum?

• CaSO₄·2H₂O

• NaCl

• KNO₃

• H₂O

Which of the following is NOT a use of mica?

• Insulation

• Lubricant

• Fuel

• Cosmetics