BLT Posted July 13, 2018 Share Posted July 13, 2018 Can anyone let me know which type of rock this is? It is white with tan specks (possibly a type of tiny fossil?) stuck all over it. I found it in my yard in middle Tennessee. Thanks! Link to comment Share on other sites More sharing options...
Innocentx Posted July 13, 2018 Share Posted July 13, 2018 Might be limestone. There are a couple of circular fossils in these photos but not enough visible for good ID. 2 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
ynot Posted July 13, 2018 Share Posted July 13, 2018 I agree with Innocentx. You may find some better condition fossils inside of it. The specks are mini concretions, probably iron. 1 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...
BLT Posted July 13, 2018 Author Share Posted July 13, 2018 Thanks! @Innocentx, @ynot! Link to comment Share on other sites More sharing options...
Innocentx Posted July 13, 2018 Share Posted July 13, 2018 @BLT "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
BLT Posted October 17, 2018 Author Share Posted October 17, 2018 On 7/13/2018 at 12:35 PM, ynot said: You may find some better condition fossils inside of it. After pounding this rock into several pieces back in July, I saved this chunk to come back to later. I now notice it does appear to have some type of fossil in it. Are these a type of bryozoan? Link to comment Share on other sites More sharing options...
Rockwood Posted October 17, 2018 Share Posted October 17, 2018 They look more like mineral crystals to me. 2 Link to comment Share on other sites More sharing options...
BLT Posted October 17, 2018 Author Share Posted October 17, 2018 Just now, Rockwood said: They look more like mineral crystals to me. Gotcha. Thank you! Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 Looks mineral, but I would not call it crystal. 1 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...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 1 minute ago, ynot said: Looks mineral, but I would not call it crystal. Hmm. Alrighty. Thank you! Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 1 minute ago, BLT said: Hmm. Alrighty. Thank you! Crystals will have a distinct geometric shape. 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...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 Just now, ynot said: Crystals will have a distinct geometric shape. Ah, now I gotcha. Thank you for clarifying that for me. Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 15 minutes ago, BLT said: Ah, now I gotcha. Thank you for clarifying that for me. Just trying to help. 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...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 Just now, ynot said: Just trying to help. I appreciate it! I was scratching my head over your initial reply, but didn’t want to bug you with a myriad of questions. Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 1 minute ago, BLT said: didn’t want to bug you with a myriad of questions. How else will You learn Grasshopper? 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...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 2 minutes ago, ynot said: How else will You learn Grasshopper? Lol! Thanks again! Link to comment Share on other sites More sharing options...
Rockwood Posted October 18, 2018 Share Posted October 18, 2018 7 hours ago, ynot said: Crystals will have a distinct geometric shape. And these are . . . amorphous ? Just how would they be described ? Link to comment Share on other sites More sharing options...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 1 hour ago, Rockwood said: And these are . . . amorphous ? Just how would they be described ? Link to comment Share on other sites More sharing options...
daves64 Posted October 18, 2018 Share Posted October 18, 2018 They look linear, similar to tourmaline. Accomplishing the impossible means only that the boss will add it to your regular duties. Link to comment Share on other sites More sharing options...
BLT Posted October 18, 2018 Author Share Posted October 18, 2018 7 minutes ago, daves64 said: They look linear, similar to tourmaline. Thanks! Can anyone tell me why the minerals would have darkened after the rock was split open? Initially, they were barely visible in the chunk of rock, as in being the same whitish color. Now they are considerably darker and quite distinctive. Link to comment Share on other sites More sharing options...
Rockwood Posted October 18, 2018 Share Posted October 18, 2018 18 minutes ago, daves64 said: They look linear, similar to tourmaline. The image that comes to my mind is a layer of tourmaline pyrite in carbonate rock that I have. The crystals are better defined and darker in mine though. Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 4 hours ago, Rockwood said: And these are . . . amorphous ? Just how would they be described ? Amorphous, rod like, stalactitic. But not a well defined geometric shape. I see no evidence of faces or anything else I would call a "crystal" So what geometric shape do You see - cubic, prismatic, rombichoida, trigonal....? Also - what is "tourmaline pyrite"? 2 hours ago, BLT said: Can anyone tell me why the minerals would have darkened after the rock was split open? Loss of water, introduction to oxygen, exposure to ultraviolet or other light. Without knowing what mineral(s) are present it is hard to say why it would change color. 2 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...
Rockwood Posted October 18, 2018 Share Posted October 18, 2018 1 hour ago, ynot said: what is "tourmaline pyrite"? If my identification is correct it's this stuff. 1 Link to comment Share on other sites More sharing options...
Lepodite Posted October 18, 2018 Share Posted October 18, 2018 The circular fossils are called horn coral, they are from the Ordovician era. We have tons of them in norther Utah! Link to comment Share on other sites More sharing options...
ynot Posted October 18, 2018 Share Posted October 18, 2018 2 hours ago, Rockwood said: If my identification is correct it's this stuff. Looks like tourmaline to Me, where does the pyrite come in? Either way , this rock looks nothing like BLT's piece to Me. First off it is not limestone.Second is the straightness of Your example does not fit the tapering curve seen in Her piece. 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...
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