Problem 24
Are gases that are given off by volcanoes minerals? Why or why not?
Problem 25
What is the most abundant mineral group in Earth's crust? What elements always are found in the minerals included in this group?
Problem 25
Make a display that shows the six crystal systems of minerals. Research the crystal systems of minerals and give three examples for each crystal system. Indicate whether any of the minerals are found in your state. Describe any important uses of these minerals. Present your display to the class.
Problem 26
Several layers are peeled from a piece of muscovite mica? What property of minerals does this illustrate? Describe this property in mica.
Problem 26
Recall that \(1 \mathrm{~mL}=1 \mathrm{~cm}^{3}\). Suppose that the volume of water in a graduated cylinder is \(107.5 \mathrm{~mL}\). A specimen of quartz, tied to a piece of string, is immersed in the water. The new water level reads \(186 \mathrm{~mL}\). What is the volume, in \(\mathrm{cm}^{3}\), of the piece of quartz?
