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Easy 75 points > You have a piece of quatz, whos hardness is 7, and an unknown mineral. explain how you would determine if the unknown mineral had a hardness greater or less then 7. Please use your own words don't just copy and paste something off some wiki that doesnt even answer my question thank you!
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Easy 75 points > You have a piece of quatz, whos hardness is 7, and an unknown mineral. explain h...
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