Vocabulary
What is a mineral?
A natural, nonliving solid
How light reflects off a mineral
Luster
Is quartz a rock or mineral?
Mineral
What does hardness measure?
Resistance to scratching
Why is color not always a reliable way to identify minerals?
Because the same mineral can be different colors
What does luster describe?
How light reflects off a mineral
Color of powder left behind
Streak
Is granite a rock or mineral?
Rock
What is the softest mineral?
Talc
A mineral scratches glass easily. What does that tell you?
It is hard
What is hardness?
How easily a mineral can be scratched
Resistance to scratching
Hardness
Rocks are made of one or more ______
Minerals
What is the hardest mineral?
Diamond
Why is streak more reliable than color?
Because streak is always the same
What is streak?
The color of a mineral’s powder
How a mineral breaks
Cleavage
Marble is made of only one mineral. True or False
True
Can a softer mineral scratch a harder mineral?
NO
A mineral breaks into thin layers. What property is this?
Cleavage
What is cleavage?
How a mineral breaks along flat surfaces
The visible color of a mineral
Color
Granite is made of which two minerals?
Quartz and feldspar
What scale is used to measure hardness?
Mohs Scale
A mineral has a shiny, metal-like appearance. What type of luster is this?
Metallic