stacylaray Posted October 3, 2022 Share Posted October 3, 2022 (edited) Found this rock in southern colorado. Strange, squares, seemingly fibers of some sort. Edited October 3, 2022 by stacylaray Include my hand for scale Link to comment Share on other sites More sharing options...
FranzBernhard Posted October 3, 2022 Share Posted October 3, 2022 Is the stuff organic, how does it react when holding a small piece into a flame? Franz Bernhard 1 Link to comment Share on other sites More sharing options...
stacylaray Posted October 3, 2022 Author Share Posted October 3, 2022 It is just as hard as the rest of the rock. Held a lighter to it and nothing happened except I turned that part a little darker. 1 Link to comment Share on other sites More sharing options...
daves64 Posted October 3, 2022 Share Posted October 3, 2022 I'm thinking this is an example of a Boxwork structure. https://en.wikipedia.org/wiki/Boxwork 1 3 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...
stacylaray Posted October 3, 2022 Author Share Posted October 3, 2022 I am able to rough the surface with my fingernail. It acts like wood. Link to comment Share on other sites More sharing options...
Rockwood Posted October 3, 2022 Share Posted October 3, 2022 Serpentine ? 1 Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted October 3, 2022 Share Posted October 3, 2022 Looks like boxwork. Google it. 1 Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
FranzBernhard Posted October 3, 2022 Share Posted October 3, 2022 (edited) 38 minutes ago, stacylaray said: I am able to rough the surface with my fingernail. It acts like wood. 16 minutes ago, Rockwood said: Serpentine ? This seems to be the most plausible, judging from the available data. A serpentine mineral or related mineral formed in cracks of a mineral, which later fell out or weathered out. Technically forming a boxwork structure. Is such stuff known in southern Colorado? Serpentinites etc.? Franz Bernhard Edited October 3, 2022 by FranzBernhard 1 Link to comment Share on other sites More sharing options...
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