Dustedyou
Hero Member
- Dec 27, 2012
- 611
- 399
- Detector(s) used
- Gold Bug, Treasure finder. Gold Cube, Chisel, Hammer, Eye Loop.
- Primary Interest:
- Prospecting
- Thread starter
- #61
I found this at an old homesite, just North of Cincinnati. It sets the detector off, and is not magnetic. It seems to have little white flecks in it. It's not very heavy. Thanks! Oh, I should add that the green you see in the pics is algae, not part of the rock.
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Bryan,,,, what you have there is Welded Tuff ( Spewed up volcanic ash and a recompression under pressure and time) a type of Bentonite.
ok so no volcanoes in cincinnati?? well you have the "Cincinnati Arch" which was a giant eruption several 100 million years ago when Pangea separated into the continents we know today, then ice-burgs/flows un-earthed it for us today. the Shiny in it is mica.. this is easy to cut (for rock) so alot of countries have used it in construction of homes. it has alot of Iron and other metals in it but is also permeable to other minerals in the surrounding area making it a sponge (especially to iron)