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The minerals talc, muscovite mica and quartz are similar because they

• have the same hardness

• are the same color

• contain silicon and oxygen

• break along cleavage planes

Which mineral is commonly mined as a source of the element lead (Pb)?

• Galena

• Quartz

• Magnetite

• Gypsum

Which of the following elements is NOT found in Plagioclase Feldspar?

• Na

• Al

• Si

• Pb

The mineral above is most likely

• garnet

• quartz

• olivine

• halite

Which two properties are most useful in distinguishing between galena and halite?

• cleavage and color

• luster and color

• hardness and streak

• streak and cleavage

Which mineral has a metallic luster, a black streak, and is an ore of iron?

• Galena

• Magnetite

• Pyroxene

• Graphite

Which property was used to classify these minerals?

• color

• luster

• chemical composition

• hardness

The mineral graphite is often used as

• a lubricant

• an abrasive

• a source of iron

• a cementing material

Which physical property of the mineral is most easily seen in the photograph?

• fracture

• hardness

• streak

• cleavage

Which mineral will scratch glass (hardness= 5.5), but not pyrite?

• gypsum

• fluorite

• orthoclase

• quartz