metwerks Posted April 24, 2014 Share Posted April 24, 2014 I found several pieces of coral in my back yard (small wooded area) and wondering what type this might be - it appears to have a lot of calcium or lime stone on top but in the crevices it is loaded with black specks.....I would appreciate any help Link to comment Share on other sites More sharing options...
Auspex Posted April 24, 2014 Share Posted April 24, 2014 It's hard to tell what I'm looking at; maybe an overview picture with a size scale would help. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
metwerks Posted April 24, 2014 Author Share Posted April 24, 2014 HERE YOU GO Link to comment Share on other sites More sharing options...
Auspex Posted April 24, 2014 Share Posted April 24, 2014 This might be heavily weathered limestone; the visible features are pretty random. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
FossilDAWG Posted April 24, 2014 Share Posted April 24, 2014 The specimen is not a coral, in fact I don't see anything organic about it. Corals don't just have a bunch of randomly sized featureless holes; the corallites are very regular in size and spacing, and they have internal features such as septa and spines. I suspect the black thingies are lichen or algae growing on the surface. You could try and put some bleach on a small area. If the black spots disappear, they were probably some organism growing on the surface of the rock. Don Link to comment Share on other sites More sharing options...
JustPlainPetrified Posted April 24, 2014 Share Posted April 24, 2014 Could it be crystal tuff? Link to comment Share on other sites More sharing options...
JustPlainPetrified Posted April 24, 2014 Share Posted April 24, 2014 Here's a photo of one in my yard...found it near a hot spring in the Rockies near Cadomin, Alberta, east of Miette Hotsprings in Jasper National Park. Link to comment Share on other sites More sharing options...
metwerks Posted April 24, 2014 Author Share Posted April 24, 2014 JustPlainPetrified. This looks just like mine except, mine has more calcium looking deposit on top..... Link to comment Share on other sites More sharing options...
erose Posted April 24, 2014 Share Posted April 24, 2014 Found near springs? Good chance it is a travertine. Link to comment Share on other sites More sharing options...
metwerks Posted April 24, 2014 Author Share Posted April 24, 2014 Mine was in wisconsin...several mile from any water Link to comment Share on other sites More sharing options...
Auspex Posted April 24, 2014 Share Posted April 24, 2014 Mine was in wisconsin...several mile from any water Away from any now, maybe, but this didn't come into being recently. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Herb Posted April 25, 2014 Share Posted April 25, 2014 looks like tuff. "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
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