Minerals and Rocks Quiz

Which of the following is not a requirement for a substance to be considered a mineral?

• Naturally occurring

• Organic

• Solid

• Definite chemical composition

What mineral has the chemical formula NaCl?

• Quartz

• Halite

• Calcite

• Gypsum

The internal structure of a mineral is described as:

• Random

• Ordered and repeating

• Amorphous

• Liquid-based

Which mineral property refers to the color of a mineral in powdered form?

• Luster

• Streak

• Cleavage

• Fracture

Pyrite is also known as:

• Fool's Gold

• Real Gold

• Silver Ore

• Iron Crystal

Which mineral has a hardness of 10 on the Mohs scale?

• Quartz

• Talc

• Diamond

• Feldspar

What type of luster does galena exhibit?

• Pearly

• Vitreous

• Metallic

• Greasy

A mineral that breaks along smooth, flat surfaces exhibits:

• Fracture

• Cleavage

• Streak

• Luster

Which mineral property is measured by comparing its weight to the weight of an equal volume of water?

• Hardness

• Specific gravity

• Density

• Cleavage

Which of the following minerals is strongly magnetic?

• Quartz

• Magnetite

• Calcite

• Halite