Topic 7, Lesson 2 Minerals

Choose the 5 characteristics a mineral must have.

• Naturally occurring, solid, forms from inorganic processes, crystal structure, and definite chemical composition

• Solid, density, fracture, crystal structure, and fracture

• Density, fracture, crystal structure, streak, and fracture

• Luster, density, fracture, crystal structure, and streak

What is a "crystal structure" in terms of minerals?

• Describes how light reflects from the structure

• The particles in a mineral line up in a pattern that repeats over and over again.

• A split in a mineral's structure.

• How a mineral breaks apart.

Choose two specific characteristics a geologist may use to identify a mineral.

• Luster

• number of atoms

• Hardness

• where it was found

True or false: Inorganic include materials from living things.

• True

• False

Choose the two ways minerals form through crystallization.

• Crystallization of magma or Lava

• pressure from the earth

• Crystallization of materials dissolved in water

• severe heat

Fill in the blank: Minerals can form from substances dissolved in water. They form when these substances leave ________ or when water _____________ leaving the substance behind.

True or False: Crystals can be shaped differently and have different amount of "faces".

• True

• False

What is the name of the "scale" used to rank the hardness of minerals?

• Fracture/Cleavage Scale

• Color/Streak Scale

• Mohs Hardness Scale

• Crystal Structure Scale

The rate at which magma cools is one factor that determines the size of crystals. Slow cooling leads to __________crystals such as coarse quartz and granite. Fast cooling leads to ____________ crystals such as pyroxene and olivine.