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Question about this quartz


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I picked up this piece of quartz a few days ago and was wonding if anyone can tell me about the bottom layer and what is causing the pattern that the quartz is growing on. It appears to cover the entire bottom. This is the first time I have seen this.

Any insight is appreciated.

post-22719-0-15442000-1349493869_thumb.j

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A lateral geode in/with quartz. (...unless ya stand it on end and then it's a verticle geode. :89: ) :25r30wi:

From a bubble in the fractured host or mother rock that the injecting quartz didn't quite fill, thus giving room for larger crystal growth.

Not a rare development at all, I've come across this formation in bedrock many times. Actually found quartz that appeared to be like foam, very similar to what you would find at the ocean's shore, ya know, sea foam. That was in the bedrock of the American River just outside of Colfax, Ca.

Geology does some really cool stuff. :)

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A lateral geode in/with quartz. (...unless ya stand it on end and then it's a verticle geode. :89: ) :25r30wi:

From a bubble in the fractured host or mother rock that the injecting quartz didn't quite fill, thus giving room for larger crystal growth.

Not a rare development at all, I've come across this formation in bedrock many times. Actually found quartz that appeared to be like foam, very similar to what you would find at the ocean's shore, ya know, sea foam. That was in the bedrock of the American River just outside of Colfax, Ca.

Geology does some really cool stuff. :)

Thank you for the info - I think its a pretty cool speciman

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  • 2 weeks later...

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