Hello I wasnt sure by your post if you are willing to buy your ore there is a pottery supply that has magnetite for sale and they have distributors in ohio and they sell from there web site to. I checked out there prices and it looked very good they have realy good discounts. I will add the web links I found. http://www.axner.com/magnetite-granular.aspx http://www.lagunaclay.com/distributors/
P.S. I hope this helps someone out there