Unitedstatesofamerica1 Posted August 31, 2017 Share Posted August 31, 2017 Quote Link to comment Share on other sites More sharing options...
GeoJack Posted August 31, 2017 Share Posted August 31, 2017 Petrified wood? 1 Quote Link to comment Share on other sites More sharing options...
Morlock Posted August 31, 2017 Share Posted August 31, 2017 Don't believe it's petrified wood as I see a quartz seam run through it on the second picture. Just not sure. Probably some metamorphic rock imho. 1 Quote Link to comment Share on other sites More sharing options...
weaver hillbille Posted August 31, 2017 Share Posted August 31, 2017 It's gneiss. TAke some granite , cook and squash it for years, and that's what you get. 2 Quote Link to comment Share on other sites More sharing options...
Nugget Shooter Posted August 31, 2017 Share Posted August 31, 2017 Yep I think ya may have it..... 1 Quote Link to comment Share on other sites More sharing options...
chrisski Posted September 1, 2017 Share Posted September 1, 2017 To me this looks like a metamorphic sandstone, like slate because of the fine grains. To me, gneiss has a larger crystal composition and possibly a taffy like texture. I read that "Regional metamorphism can transform shale into slate, then phyllite, then schist, and finally into gneiss." 2 Quote Link to comment Share on other sites More sharing options...
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