View the pictures, and read over the short descriptions below. When you think you've identified the mineral name, click on it to see if you're right and get more information about it.

Quartz, variety chalcedonyQuartz

Tourmaline

Tourmaline

Magnetite

Magnetite

Chrysocolla

Chrysocolla

 

1. Copper colors many minerals blue, green, or turquoise. Which of these minerals contains copper? It is a very common copper mineral in Arizona. This sample is from the Ray Mine in Pinal County.

2. The first of two black minerals.This one is 8 sided, with triangular faces. Maybe it looks like some dice to you. This is magnetite, one of the few minerals to which a magnet will stick. If you have a magnet, even one on your refrigerator, see if a sample is attracted to the magnet. These magnatite specimens are from Western Australia.

3. The other black mineral is tourmaline. This one has a number of different faces but might look 3 or 6 sided. It may look like it's a part of a column. This specimen also comes from Western Australia.

4. A white mineral, this is one of the most common minerals making up the earth’s crust. It comes in many forms including clear crystals, purple amethyst, a pink rose color, and as agate, jasper, fint, and petrified wood. The mineral is quartz and the various names are used for the way it looks or the color it is. These specimens are quartz from the Superstition Mountains, and this form is called chalcedony or desert rose.

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