ESS

AT LEAST 10 SENTENCES PLEASE

Select either a MINERAL or a ROCK that has some economic value, practical use, or a harmful or beneficial effect. Create a discussion thread with the name of the mineral/rock as the title of the thread In your post, compose a paragraph or two and include the following: The name of the rock or mineral. A description of its chemical/mineralogical composition. The geological conditions under which it forms. Where it is found, and how it is collected. A discussion of its economic value, practical use, harmful or beneficial effects. Feel free to include an image of your rock/mineral (not required). Include the NAMES and SOURCES of the materials you used to find the information you used in your post.

 

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