This is the softest mineral and has a value of 1 on the Mohs Hardness Scale
What is talc?
What is the name of the scale used to measure the hardness of minerals?
Mohs Hardness Scale
This mineral is commonly added to public water and toothpaste to aide in dental hygiene. (what does a dentist put on your teeth to prevent cavities?)
What is flourite?
When we talk about the structure of a mineral we use what words? (1 part of the definition of a mineral.)
crystalline structure
Minerals must be in this physical state.
Solid
What is one way a mineral forms that the water contains dissolved minerals evaporates.
Evaporation
What is the primary source of a mineral? (Where do minerals come from?)
Earth's crust
This mineral is a major ingredient of counter tops?
What is quartz?
The color of a mineral in powdered form is called its...?
Streak
This mineral contains large quantities of iron and has a reddish-brown streak. You used it in the streak test lab.
What is hematite?
These two properties deal with how a mineral breaks.
What are cleavage and fracture?
Which describes the tendency of a mineral to break in patterns? (along flat planes-layers is an example)
Cleavage