Brad1978 Posted October 2, 2017 Share Posted October 2, 2017 Found this on the Frio River after a good rain. It has round crystals unless they are eggs. I also thought it could be coral. Can anyone tell what this is? Link to comment Share on other sites More sharing options...
westcoast Posted October 2, 2017 Share Posted October 2, 2017 Mineral growth not eggs. At a stretch it might be growing over or replacing coral although I don't see any good evidence for that. Nice piece. Link to comment Share on other sites More sharing options...
Brad1978 Posted October 2, 2017 Author Share Posted October 2, 2017 Thanks. I think it’s pretty cool too. Link to comment Share on other sites More sharing options...
Ludwigia Posted October 2, 2017 Share Posted October 2, 2017 Could be chalcedony. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Jdeutsch Posted October 2, 2017 Share Posted October 2, 2017 botryoidal pattern https://www.google.com/search?q=botryoidal+chalcedony&sa=X&tbm=isch&tbo=u&source=univ&ved=0ahUKEwjchvnA29LWAhUe3YMKHQ-rDhMQsAQIJw&biw=1366&bih=637 shows images of botryoidal chalcedony on the internet Link to comment Share on other sites More sharing options...
ynot Posted October 2, 2017 Share Posted October 2, 2017 Definitely a piece of botryoidal agate (chalcedony). Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Brad1978 Posted October 4, 2017 Author Share Posted October 4, 2017 That’s pretty cool. Wonder if it has any cool designs if I were to cut it. Link to comment Share on other sites More sharing options...
Ludwigia Posted October 4, 2017 Share Posted October 4, 2017 1 hour ago, Pedernales78 said: That’s pretty cool. Wonder if it has any cool designs if I were to cut it. You could take a chance, although it's not very thick and there's not all that obvious variation in color. If I were you, I'd leave it as is. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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