Minerals
Chapter 3
What are five characteristics of a mineral?
What are five characteristics of a mineral?
Natural
Inorganic nonliving
Solid
One element or one compound (one substance)
Atoms arranged in a repeating pattern
Give three ways minerals may form.
Give three ways minerals may form.
Cooling magma(molten rock)
From solutions
Evaporates water evaporates leaving mineral
Precipitates solid material drops out of solution
Classify minerals into groups
Classify minerals into groups
List the physical properties used to identify minerals
List the physical properties used to identify minerals
Appearance
Hardness
Luster how light is reflected
Metalic
Nonmetalic
Color
streak
List the physical properties used to identify minerals(cont)
Breakage pattern
Cleavage breaks along flat surface
Fracture breaks with rough or jagged edges
Special properties
Calcite fizzes with HCl added
Calcite produces double image when looked through
Magnetite acts as a magnet
The Mohs Hardness Scale
See page 68
What are gems and ores?
What are gems and ores?
Gem
Rare
Beautiful
valuable
Ore mined for a profit
