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 Post subject: Rock Identification
PostPosted: Tue Oct 09, 2012 6:10 pm 
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I bought this rock at a Rock Show a while back. The seller told me that he got this agate in the Cadiz Mountains located in the Mojave Desert, CA. I just broke apart some of this agate to get ready to tumble it. In the center, there are cyrstals, kind of like a geode. Can anyone identify this rock for me and I'm assuming I shouldn't tumble it now? Your answers are appreciated. Thanks.

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 Post subject: Re: Rock Identification
PostPosted: Tue Oct 09, 2012 7:24 pm 
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Looks like a geode which is a crystal filled vug, surrounded with agate as they usually are, purported to be from the Cadiz Mountains located in the Mojave Desert, CA.
I know this sounds like I'm being a smart ass, but that's exactly what I think it is. :D


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 Post subject: Re: Rock Identification
PostPosted: Tue Oct 09, 2012 7:28 pm 
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Barbara beat me to it on the identification. But anyway, I think tumbling it would decrease the value, since you'd lose the nice crystal faces, but it's not a terribly valuable piece to start with (though it does look nice). I would keep it as-is.


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 Post subject: Re: Rock Identification
PostPosted: Tue Oct 09, 2012 7:32 pm 
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Thanks so much. After I looked up Geode, I felt stupid for even asking the question. I figured it out after I posted. Thanks for the advice. I won't tumble it. It is very pretty in person. Don't you just love us newbies?


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 Post subject: Re: Rock Identification
PostPosted: Tue Oct 09, 2012 7:35 pm 
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We actually do love the new members who are honestly looking for information and appreciate when they get it.
Welcome, and keep us abreast of your tumbling successes.


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 Post subject: Re: Rock Identification
PostPosted: Fri Oct 12, 2012 10:43 am 
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An agate with a cavity lined with quartz crystals. Very common, yet pretty, and educational as well, displaying both crystalline and cryptocrystalline forms of quartz, SiO2.


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