tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Mar 26, 2014 0:50:55 GMT -5
Found this at a county park. I have permission to collect rocks and metal detect there. It was around a fire pit with a fist size chunk of amethyst some turritella and other stuff. Like somebody had used a rock collection to line a fire pit, weird. Having said that it is probably not an Illinois native. Very heavy for its size. It looks like a coral to me but I'm no expert ....... "front" view "top" view "bottom" view
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,680
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Post by Fossilman on Mar 26, 2014 9:21:17 GMT -5
Could be coral or sponge! Awesome!
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Mar 26, 2014 11:01:28 GMT -5
Sponge was my second guess but whatever the case it's pretty cool.
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miander
spending too much on rocks
Searching for the shop of my dreams...
Member since November 2013
Posts: 407
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Coral ???
Mar 27, 2014 23:15:45 GMT -5
via mobile
Post by miander on Mar 27, 2014 23:15:45 GMT -5
Whatever it is, it wants to be cut and shared!
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Mar 28, 2014 8:42:11 GMT -5
Whatever it is, it wants to be cut and shared! I have to this point resisted the urge to cut it. Very curious about the inside though.
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miander
spending too much on rocks
Searching for the shop of my dreams...
Member since November 2013
Posts: 407
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Coral ???
Mar 28, 2014 22:36:53 GMT -5
via mobile
Post by miander on Mar 28, 2014 22:36:53 GMT -5
We are too!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Mar 29, 2014 5:48:19 GMT -5
Looks like coral tk. Shape and surface texture. pic 2 = top view. pic 3 = bottom/root side of coral. Possibly a sponge though. Saw a little window if you want to keep it whole.
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Post by gingerkid on Mar 29, 2014 10:12:17 GMT -5
Nice find! Pretty cool that you are allowed to hound and use your metal detector at the state park, tkvancil! Is that calcite peeking out of the specimen in the first pic?
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Mar 29, 2014 15:02:44 GMT -5
Nice find! Pretty cool that you are allowed to hound and use your metal detector at the state park, tkvancil! Is that calcite peeking out of the specimen in the first pic? Not to split hairs or anything but it's a county park where my wife works part time as a Ranger/Greeter, so I have an in with the superintendent. He only asks that I not leave any hole and replace the sod. So yeah its pretty sweet. I don't believe that it is calcite your seeing. Too hard as far as I can tell.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Mar 29, 2014 19:09:52 GMT -5
Dude! that thing is cool.
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Post by gingerkid on Mar 31, 2014 7:08:35 GMT -5
That's one cool coral piece!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Mar 31, 2014 14:21:44 GMT -5
Staircase from heaven.
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Post by tandl on Apr 15, 2014 8:43:24 GMT -5
That is weird about the fire ring with turri and amy . That looks to be a actinostroma sponge, and was likely found in Illinois, i find them south of You. They are loose finds , no formation - likely glacial.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Apr 16, 2014 10:49:56 GMT -5
That is weird about the fire ring with turri and amy . That looks to be a actinostroma sponge, and was likely found in Illinois, i find them south of You. They are loose finds , no formation - likely glacial. Thanks for that info. I'll have to spend some google time researching.
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