Minerals 8R

The color of a mineral in its powdered form

• Cleavage

• Fracture

• Streak

• Luster

The way in which light is reflected from the surface of a mineral

• Luster

• Streak

• Cleavage

• Fracture

Which one of these characteristics is least helpful in identifying a mineral?

• Color

• Streak

• Luster

• Hardness

What should be used to test the hardness of a mineral?

• A Streak Plate

• Glass

• Hydrochloric Acid

• Breaking It

When a mineral breaks into smooth, flat sides.

• Cleavage

• Fracture

• Luster

• Streak

When a mineral breaks with rough, jagged edges.

• Cleavage

• Fracture

• Metallic

• Non-Metallic

A mineral's resistance to being scratched.

• Hardness

• Streak

• Luster

• Color

Minerals that are easy to scratch will have

• A very low hardness

• A very high hardness

• Cleavage

• Fracture

What can you use to determine a mineral's streak?

• Glass

• Breaking It

• Streak Plate

• Light

What would not be an accurate description of a metallic mineral?

• Silver

• Rusty

• Gold

• Dull