Unit 3 & 4 Test

In Geology, the tendency of a mineral to split along specific planes of weakness to form smooth, flat surfaces

• fracture

• cleavage

• strata

• element

A natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably

• nonfoliated

• foliated

• ore

• crystal

A naturally occurring solid mixture of one or more minerals or organic matter.

• erosion

• deposition

• composition

• rock

Layers of rock

• stratification

• strata

• rock

• rock cycle

Describes the texture of metamorphic rock in which the mineral grains are arranged in planes or bands.

• foliated

• nonfoliated

• reclamation

• ore

A substance made up of atoms of two or more different elements joined by chemical bonds.

• rock

• density

• fracture

• compound

Rock that forms from the cooling and solidification of lava at the Earth's surface.

• intrusive igneous rock

• rock cycle

• rock

• extrusive igneous rock

The process of returning land to its original condition after mining is completed.

• stratification

• texture

• reclamation

• luster

A measure of the ability of a mineral to resist scratching.

• luster

• hardness

• streak

• cleavage

Describes the texture of metamorphic rock in which the mineral grains are not arranged in planes or bands.

• nonfoliated

• foliated

• stratification

• rock cycle