Minerals: What Are Minerals?

Which of the following minerals is commonly used in jewelry?

• Quartz

• Turquoise

• Gypsum

• Feldspar

What percentage of Earth's crust is made up of rock-forming minerals?

• 50%

• 70%

• 90%

• 100%

Which of the following is NOT a characteristic of a mineral?

• Crystal shape

• Definite chemical makeup

• Liquid state

• Naturally occurring

What is a crystal made of?

• Liquid elements

• Gaseous compounds

• Particles forming a repeating pattern

• Randomly arranged particles

Quartz is composed of which two elements?

• Silicon and Oxygen

• Carbon and Hydrogen

• Nitrogen and Helium

• Iron and Oxygen