GL 107 Earth Systems Science

K. Hannula

Discussion questions for 9/3/07

1.  Define "mineral."

2.  Find three objects around your dorm room, around your house, or around town that are made of or contain a mineral (or minerals).  What minerals do they contain?

3.  Find five different materials that are NOT minerals.  Why isn't each one a mineral?

4.  How are minerals different from rocks?

5.  Define each of the following properties of minerals: crystal form, luster, color, streak, hardness, cleavage, fracture, specific gravity.

6.  Which properties of minerals are controlled mainly by their crystal structure?  Which are controlled mostly by their chemical composition?