Minerals

Mineral containing silicon, oxygen, and usually one or more other elements

• carbonate
• halide
• silicate
• sulfate

How light is reflected off a mineral

• streak
• color
• luster
• fracture

Measure of how easily a mineral can be scratched

• fracture
• cleavage
• hardness
• streak

Breakage along smooth, flat planes

• fracture
• cleavage
• streak
• ore

The color of a mineral's powder

• color
• streak
• luster
• powder

Breakage along rough or jagged edges

• cleavage
• fracture
• streak
• luster

What is the softest mineral?

• sulfur

• calcite

• talc

• corundum

Why is coal not a mineral?

• It's not a solid
• It is man-made
• It is not inorganic
• It is made of carbon