winnph Posted April 8, 2019 Share Posted April 8, 2019 I'm becoming a habitual "is this wood" poster... I found this one yesterday on the shores of Lake Washington near an outcrop of the Blakeley formation, and just polished one face using sandpaper. Specimen measures 1.5 inches in the longest dimension and the polished face measures 1 inch x 1 inch. SG is 2.48 by suspension method, +/- 0.01g accuracy. The lighter spot on the polished face is where I got lazy before removing the entire weathered surface. 1 Link to comment Share on other sites More sharing options...
ynot Posted April 8, 2019 Share Posted April 8, 2019 Yes, this is wood. 3 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...
winnph Posted April 8, 2019 Author Share Posted April 8, 2019 26 minutes ago, ynot said: Yes, this is wood. Link to comment Share on other sites More sharing options...
Notidanodon Posted April 8, 2019 Share Posted April 8, 2019 I think so as well Link to comment Share on other sites More sharing options...
Rockwood Posted April 8, 2019 Share Posted April 8, 2019 Good demonstration of how to expose it as well. Link to comment Share on other sites More sharing options...
winnph Posted April 8, 2019 Author Share Posted April 8, 2019 4 minutes ago, Rockwood said: Good demonstration of how to expose it as well. It involved wearing down my underpowered arm muscles with 60 grit, 220, then 400 grit for good measure. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted April 8, 2019 Share Posted April 8, 2019 1 minute ago, winnph said: It involved wearing down my underpowered arm muscles with 60 grit, 220, then 400 grit for good measure. I would use my angle grinder with a tile cutting blade to start and finish with a random orbit sander. Today I'm a plow jockey though because it's snowing here. Link to comment Share on other sites More sharing options...
Plantguy Posted April 12, 2019 Share Posted April 12, 2019 On 4/8/2019 at 4:11 AM, winnph said: It involved wearing down my underpowered arm muscles with 60 grit, 220, then 400 grit for good measure. Nice....I do that 2!!...makes it much easier to see what the heck is going on inside. Regards, Chris Link to comment Share on other sites More sharing options...
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