1. Mineral Cleavage and Fracture

2. Warm-up
What are the characteristics we use to identify a mineral?

5. Crystals, not cleavage
Some minerals may be tricky – they look like they have good cleavage but it’s just the crystal shape
Remember – cleavage is about how it breaks!

6. Fracture
Uneven
Conchoidal

7. Lab Make a chart in your notebook – there are 12 stations
At each station write the name of the mineral and what cleavage/fracture you think it has.
Be sure to record what the cleavage is (perfect, good, or poor)
How many planes of cleavage?
If it’s fracture, is it uneven or conchoidal?
I will tell you when to rotate to the next station
Check it with me if you are unsure!