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Hi, I have a large dark grey crystal I have found and was curious of what it could be. #852170

Asked October 04, 2023, 4:28 PM EDT

This stone/crystal was found today, the bottom looks light grey more stone then crystal, all sides are flat and very smooth thank you!

Sanilac County Michigan

Expert Response

Good afternoon and thank you for reaching out. MSU Extension does not have an expert in this area but we do believe the Earth, science department, and msu may have some ideas. Here’s a link to their website where you can contact them:

https://ees.natsci.msu.edu/about/contact.aspx. 

Best wishes, 
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