Buckshot Posted April 5, 2011 Share Posted April 5, 2011 Is there any connection between corundum & epidote ? In a previous post I had found corundum with green sands which I originally thought was peridot along with some gold, however according to NC Geologists they indicated it was epidote even though some of it was light pistachio color and some dark green. The epidote is so clustered you can pick it up like a clod of dirt and it breaks apart real easy and there is a lot of yellow mica mixed in it. The location is a small slow moving branch and I have tested 350 ft upstream as well as 100 ft and very little epidote and no corundum. My next test will be 50-60 ft upstream. Anyone had any experience with this in the past, I would appreciate your comments. Quote Link to comment Share on other sites More sharing options...
bigrex Posted April 5, 2011 Share Posted April 5, 2011 I guess there can be sometimes, apparently epidote forms in several environment, two of those can be metamorphic environments which I also think would be more suitable for corundum formation. Epidote can be found "with chlorite and actinolite as hornfels and greenstone of contact metamorphic rocks, and with hornblende, almandine, and actinolite in amphibolite and blue schist of regional metamorphic rocks". Epidote is a silicate (basic calcium, aluminum, iron silicate) while corundum is an oxide (aluminum oxide), so they both have aluminum in them. Quote Link to comment Share on other sites More sharing options...
Buckshot Posted April 6, 2011 Author Share Posted April 6, 2011 I guess there can be sometimes, apparently epidote forms in several environment, two of those can be metamorphic environments which I also think would be more suitable for corundum formation. Epidote can be found "with chlorite and actinolite as hornfels and greenstone of contact metamorphic rocks, and with hornblende, almandine, and actinolite in amphibolite and blue schist of regional metamorphic rocks". Epidote is a silicate (basic calcium, aluminum, iron silicate) while corundum is an oxide (aluminum oxide), so they both have aluminum in them.Thanks Rex, didn't know if this was just a coincidence or not. Did you ever see the two together in Macon County ? Quote Link to comment Share on other sites More sharing options...
bigrex Posted April 7, 2011 Share Posted April 7, 2011 Thanks Rex, didn't know if this was just a coincidence or not. Did you ever see the two together in Macon County ?No, frankly I did not, no epidote to speak of in Cowee Valley corundum deposits, although I would wager a pretty big bet that the origin is a metamorphic one. Quote Link to comment Share on other sites More sharing options...
Buckshot Posted April 11, 2011 Author Share Posted April 11, 2011 No, frankly I did not, no epidote to speak of in Cowee Valley corundum deposits, although I would wager a pretty big bet that the origin is a metamorphic one.Thanks, Big Rex Quote Link to comment Share on other sites More sharing options...
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