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Let's Rock => Identifications of Materials => Topic started by: nwbeachrocker on January 15, 2017, 05:28:04 PM
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I found this rock at a NW Washington beach. I have slabbed it and cabbed it, but still can't figure out what it is. It might just be some funky granite, but I wondered if anyone else has seen anything like it. I'm heading out now to set the cab in some silver and would like to be able to identify the piece when done.
It does not scratch with a knife.
Half the original rock
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One of the slabs
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The first cab
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The flow structure makes it look like a meta-gneiss. In this case it was heavily silicified.