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Welcome to our Mineral Wikispace!
__Instructions__: Update the wikispace with information about your assigned mineral. Each mineral should have a picture and a description that answers the following questions:

1. What are its properties? 2. How is it used? 3. How much is used in the US annually? 4. What are the sources, and how is it extracted? 5. How rare is it? (i. e. how much "reserves"?) 6. Are there substitutes?

**Include a list of references on your page.**
Mineral links are on the right of the screen.