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PostPosted: Tue Sep 13, 2016 10:00 pm 

Joined: Fri Jul 01, 2016 6:55 pm
Posts: 742
Location: Texas
I've seen some brief discussions about ferrite, hematite and cobalt rings. I believe I seen that the cobalt rings have some magnetism and will attract iron. How can you tell the difference between ferrite and hematite without a XRF gun? I guess I should be asking this first: does hematite have any more value than iron?


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