Minerals and Igneous Rocks

What mineral is used for pencils?

• Graphite
• Galena
• Magnetite
• Quartz

The mineral in the picture has a ____________ luster.

• Nonmetallic
• Metallic
• Pearly
• Earthy

Which of the following is NOT a way to identify a mineral?

• Luster
• Hardness
• Heaviness
• Density

A mineral breaks into pieces like are shown in the picture. How would you describe its breakage?

• Fracture
• Cleavage
• Glassy
• Waxy

Identify one mineral below that can scratch the mineral olivine.

• amphibole
• muscovite mica
• plagioclase feldspar
• quartz

Igneous rock that hardens from lava on the Earth's surface

• Intrusive Igneous Rock
• Extrusive Igneous Rock
• Granitic Igneous Rock
• Basaltic Igneous Rock

Igneous rock that forms from magma deep inside the Earth

• Intrusive Igneous Rock
• Extrusive Igneous Rock
• Granitic
• Basaltic

Extremely fast cooling of molten rock results in what type of texture?

• coarse grained texture
• fine grained texture
• glassy texture
• very coarse texture

What is the name of a mafic, extrusive igneous rock?

• Granite
• Rhyolite
• Gabbro
• Basalt

What is the name of a felsic, intrusive igneous rock?

• pegmatite
• Rhyolite
• Gabbro
• Basalt