spicer m
spending too much on rocks
Member since October 2008
Posts: 337
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Post by spicer m on Dec 1, 2009 0:20:05 GMT -5
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Dec 1, 2009 11:18:32 GMT -5
Looks like dendritic opalite. Often found in association with diatomite which is white in color. Lots of locations in California, Washington, Nevada, Wyoming. Don't see why you couldn't find some in Arizona as much of the geology is similar....Mel
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MikeS
fully equipped rock polisher
Member since January 2009
Posts: 1,081
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Post by MikeS on Dec 1, 2009 17:40:13 GMT -5
I would guess some form of dendritic jasper or possibly opal...we have a dendritic jasper from the cedar rim here in Wyoming that looks a lot like that...
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spicer m
spending too much on rocks
Member since October 2008
Posts: 337
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Post by spicer m on Dec 1, 2009 22:23:33 GMT -5
Thank You Mel and Mr. Scrooge
Mike
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Post by johnjsgems on Dec 3, 2009 13:23:45 GMT -5
Mike, bring a piece to Clouds net month. I'll have Picasso there. You can compare them. The healed fractures are the only similarity. Interesting stuff though. If dendritic opalite it will usually have very glassy, wet looking surfaces on recently chipped areas. A drop of acid will tell you if a marble or limestone.
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spicer m
spending too much on rocks
Member since October 2008
Posts: 337
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Post by spicer m on Dec 3, 2009 22:51:16 GMT -5
Thanks John I wiil do that . I understand You will be there on Jan 2nd Per Dave.
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Post by johnjsgems on Dec 4, 2009 11:48:49 GMT -5
I should be open by the 2nd. I'll be across the road from where I was the last few years.
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Post by Toad on Dec 12, 2009 9:50:48 GMT -5
You cut some beautiful cabs from it.
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