NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Mar 28, 2019 21:41:08 GMT -5
Awesome cabs. I like the purple Burro Creek best. The banded material is interesting too and we used to find very similar rhyolite just east of California City. When I lived in Ojai, we used to collect a lot of that fossil stone on the cobbled beaches between Mugu Rock and Malibu. Locally, it was called Pt. Mugu Shell Rock or simply Coquina. The best examples had a weathered exterior but an almost black interior matrix and took a pretty fair polish. Fun to work too because it cuts fast....Mel At your guidance, I went their and grabbed some. Thank you! Some of it it harder than steel. Won't scratch at all. Takes an amazing polish.
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Tommy
Administrator
Member since January 2013
Posts: 12,993
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Post by Tommy on Mar 29, 2019 10:38:01 GMT -5
Did I give you any of that Coquina stone? I have a few hundred pounds if you want more You did, thank you and no thank you. I'm not able to cut anything larger than a slab thickness at this time. The material that made this cabochon is very different stuff. It is literally shells embedded in limestone with a hardness probably between 3 and 4. Plus the larger slabs break easily by hand along the big embedded shells.
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Mar 29, 2019 14:39:50 GMT -5
Beauties all the way around Tommy!!! Thanks for sharing. Cheers
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