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Geology Pop Quiz

Lord Kaitan de Storms

Entry posted by Lord Kaitan de Storms

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Okay let's see how many people can get this right:

 

Which ONE of the following is NOT a mineral?

 

1. Quartz.

2. Ice.

3. Coal.

4. Gypsum.

 

Post your answer in the comments section. I'll announce the winners later today!

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