1. How can one magma body produce many different kinds of igneous rocks? (Hint: Remember that magma contains many different minerals.) 2. Why are quartz and diamond so much harder than gold? 3. Name...

1. How can one magma body produce many different kinds of igneous rocks? (Hint: Remember that magma contains many different minerals.)

2. Why are quartz and diamond so much harder than gold?

3. Name two properties of minerals that are based on the mineral’s crystal structure.