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Showing results for tags 'quart'.
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Hi I was needed help on these 2 rocks they are both very very heavy and they are both extremely hard. I normally grind a part of a rock down to see the inside with my bench grinder and some rocks are harder than others but I have never seen anything as hard as these rocks. They just bounce off the grinding wheel and once I do manage to hold it against the wheel for a few seconds with sparks flying everywhere it does almost nothing to the rocks and i have grinded 1000's of rocks, Crystal's and metals with it and this is tye first time I have had this kind of reaction. The one that is more white has some random Rectangular shaped rust spots so I scraped one down and it has a dark grey metal color like what you find in Iron Ore. But the spots are not attractive to magnets. These are new to me but there are a lot of things new to me because I haven't been collecting rocks for that long. Any help at all with identifying the 2 rocks would be greatly appreciated. Thank You For all your help. The rocks where found in Macon, GA.