Chapter 4 Flashcards
1
Q
Mineral
A
Naturally occurring crystalline substance
2
Q
Crystal
A
A solid with repeating patterns of atoms
3
Q
Magma
A
Molten material found beneath the surface of the Earth
4
Q
Silicates
A
Minerals that contain silicon and oxygen
5
Q
Luster
A
The way that a mineral reflects light
6
Q
Streak
A
The color of a mineral when it is in a powdered state
7
Q
Hardness
A
A measure of how easily a mineral can be scratched
8
Q
Cleavage
A
If a mineral splits in half easily and evenly
9
Q
Fracture
A
If a mineral breaks with rough edges
10
Q
Specific gravity
A
The ratio of a weight of a substance to an equal volume of water at 4 C
11
Q
Ore
A
A mineral that contains a useful substance
12
Q
Gems
A
Valuable minerals
