Minerals Exam

What is a mineral?

• A plant

• A naturally occurring, inorganic solid with a definite chemical composition and crystal structure

• An animal

• A liquid underground

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

• Naturally occurring

• Organic

• Solid

• Definite chemical composition

Which mineral is the hardest on the Mohs scale?

• Quartz

• Talc

• Diamond

• Gypsum

Which property shows how a mineral reflects light?

• Streak

• Luster

• Hardness

• Cleavage

What is the color of the powder left by a mineral on a porcelain plate called?

• Luster

• Streak

• Cleavage

• Fracture

Which mineral is used to make glass?

• Quartz

• Halite

• Calcite

• Talc

What is the difference between cleavage and fracture in minerals?

• Cleavage is color, fracture is hardness

• Cleavage is how a mineral breaks along flat surfaces, fracture is how it breaks unevenly

• Cleavage is luster, fracture is streak

• Cleavage is streak, fracture is color

Which of these is a mineral?

• Coal

• Granite

• Halite

• Plastic

Which test is used to determine a mineral's hardness?

• Streak test

• Mohs scale test

• Acid test

• Magnetism test

What is the most common mineral group in Earth's crust?

• Silicates

• Oxides

• Sulfides

• Halides