bunnyfights
noticing nice landscape pebbles
Member since May 2022
Posts: 83
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Post by bunnyfights on May 2, 2022 17:51:25 GMT -5
Since this is my second post here, you can assume correctly that I am no expert in rock identification. I did perform some research which consisted of a number of google searches which really did not help much. What I know: Found in Southern WI. Found along with other sedimentary rocks (limestone, quartz, etc.) Does not react to acid (concentrated HLC) ~7 on a hardness scale Fracture easily and edges are very sharp. I am guessing these are Jasper or Chert nodules. Some are solid color, some are banded, some are brecciated, some are a mix of these. I am second guessing my identification since I am not seeing any other examples (again google search) of this type of material (color) from this area. Any help would be appreciated. Kenny
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Post by rmf on May 2, 2022 17:54:56 GMT -5
PAPA-ROCKS What county? I would say chert would be typical in the SW corner of WI (driftless area).
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bunnyfights
noticing nice landscape pebbles
Member since May 2022
Posts: 83
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Post by bunnyfights on May 2, 2022 18:51:30 GMT -5
Central. 40 miles east of the edge of glacier coverage
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Post by jasoninsd on May 2, 2022 19:08:48 GMT -5
Kenny, wish I could help you on the ID...but I did want to commend you on trying the different steps in IDing them yourself first!
(I have a tendency to "forget" to do those things first...and just post pics in my excitement! LOL)
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on May 2, 2022 22:29:26 GMT -5
Looks like chert to me. (But I’m very new at this all lol!)
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Post by rockjunquie on May 2, 2022 22:49:43 GMT -5
I'm thinking chert, too. Maybe flint, but I don't know your geology. (Or, is flint a chert? Maybe I shouldn't answer these questions! LOL!)
I have to say, I am impressed with your description and attempt to ID this along with your picture posting.
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