ESS

AT LEAST 10 SENTENCES PLEASESelect 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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