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Post by jakesrocks on Jan 17, 2013 0:16:47 GMT -5
South Dakota Horn Coral. From the Fox Hills formation. I didn't know horn coral was found in South Dakota until yesterday, when I received this in the mail from a friend.   |
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jcinpc
has rocks in the head
Member since April 2009
Posts: 722
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Post by jcinpc on Jan 17, 2013 0:26:22 GMT -5
that is cool, how big is that piece and how big do they get? a buddy of mine found some beautiful pinkish colored coral in NM a few years ago and then we have the petosky stone up north...there are good examples of it all around
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Post by jakesrocks on Jan 17, 2013 0:33:52 GMT -5
This piece is about as big around as a quarter, and about 3/4" high. I've seen examples of red horn coral from Wyoming that were several inches long.
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Post by johnjsgems on Jan 17, 2013 10:43:42 GMT -5
There is a bunch of them in Texas as well. They are limestone replacements so a sand color and not as striking as the red/white and black/white agateized pieces.
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Post by jakesrocks on Jan 17, 2013 10:56:35 GMT -5
John, this piece is solidly agatized. Not as pretty as the highly colored stuff, but still interesting to look at.
Just heard from the friend who sent me this piece. She's headed out today to see if she can find more. (along with Fairburns of course).
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,602
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Post by jamesp on Jan 17, 2013 11:05:31 GMT -5
I have heard the indonesian corals lack color-that they heat them to intensify color.That is a fine fossil.
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