Bev Posted September 17, 2014 Share Posted September 17, 2014 Ordovician SE Minnesota Galena Formation Sometimes we end up with Ice Age fossils here, or maybe it is a bryzoan that I'm not familiar with, or something else... For Scale To me, it definitely looks like a fossil and feels like a rock. What do YOU think??? Thanks for taking the time to look! The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
RyanNREMTP Posted September 17, 2014 Share Posted September 17, 2014 Looks coralish to me. But I'm not familiar with the stuff up there. Link to comment Share on other sites More sharing options...
tmaier Posted September 17, 2014 Share Posted September 17, 2014 I recall finding some of that "stuff" many years ago in Minnesota, and I dismissed it as a mineral. Hope I didn't throw away something interesting. Link to comment Share on other sites More sharing options...
Bev Posted September 18, 2014 Author Share Posted September 18, 2014 This thing is definitely lighter in weight than it should be... The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
TqB Posted September 18, 2014 Share Posted September 18, 2014 (edited) Not a coral or bryozoan - I think it may be a sponge, seems to be showing a nice spicule network. Edited September 18, 2014 by TqB 1 Tarquin Link to comment Share on other sites More sharing options...
Bev Posted September 18, 2014 Author Share Posted September 18, 2014 Not a coral or bryozoan - I think it may be a sponge, seems to be showing a nice spicule network. Very interesting! Learned a new word, not that I really understand what it means when I looked it up on Google. Thanks for the direction, TqB! The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
TqB Posted September 18, 2014 Share Posted September 18, 2014 Very interesting! Learned a new word, not that I really understand what it means when I looked it up on Google. Thanks for the direction, TqB! Unless it's just cancellous bone structure and Ice Age after all... sponges are more interesting though Tarquin Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 18, 2014 Share Posted September 18, 2014 Took the liberty of brightening the pics. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
TqB Posted September 18, 2014 Share Posted September 18, 2014 (edited) Been googling and it does look like cancellous = trabecular = spongy bone (not called spongy for nothing!). Could it be modern? - although I note that you say it's rock-like... Edited September 18, 2014 by TqB Tarquin Link to comment Share on other sites More sharing options...
JustPlainPetrified Posted September 18, 2014 Share Posted September 18, 2014 Volcanic tuft? Link to comment Share on other sites More sharing options...
TqB Posted September 19, 2014 Share Posted September 19, 2014 Or precipitated tufa? - I think this is hard just from photos... Tarquin Link to comment Share on other sites More sharing options...
MarcoSr Posted September 19, 2014 Share Posted September 19, 2014 Does it float on water? Marco Sr. "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
John K Posted September 19, 2014 Share Posted September 19, 2014 (edited) Not a coral or bryozoan - I think it may be a sponge, seems to be showing a nice spicule network. I thought this, too, but it doesn't resemble any of the sponges I've seen in the same formations (though I'm first to admit I haven't seen all of them!!) It doesn't look organized enough to be organic, IMHO Or precipitated tufa? - I think this is hard just from photos... I think this to be more likely than anything volcanic. Or maybe this might be part of a crumbly "rind" from a larger silacious deposit/nodule... hard to say without holding in my hand! Edited September 19, 2014 by John K Link to comment Share on other sites More sharing options...
tmaier Posted September 19, 2014 Share Posted September 19, 2014 I think this to be more likely than anything volcanic. Or maybe this might be part of a crumbly "rind" from a larger silacious deposit/nodule... hard to say without holding in my hand! The pieces that I found, I wrote off as some type of calcite. It seems to be glassy, softer than silica, and have no organized structure. Link to comment Share on other sites More sharing options...
TqB Posted September 19, 2014 Share Posted September 19, 2014 Does it fizz in acid? Tarquin Link to comment Share on other sites More sharing options...
Bev Posted September 19, 2014 Author Share Posted September 19, 2014 It drops like a rock in water! LOL NOT glassy. Will try the acid shortly. The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
tmaier Posted September 19, 2014 Share Posted September 19, 2014 NOT glassy. What is it like when you try to scratch it or poke it with a knife? If it is not glassy then it isn't the stuff I found. Link to comment Share on other sites More sharing options...
Bev Posted September 19, 2014 Author Share Posted September 19, 2014 Seems rather fragile for sticking it with a knife. Will do acid test shortly, just in for lunch. The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
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