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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,487
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Post by Sabre52 on Jul 9, 2015 8:16:44 GMT -5
Wow! *S* There are a lot of back rocks and once water tumbled, it makes them all look a lot alike. Without knowing hardness, its doubly difficult to make an ID. Could be andesite, or basalt. Could be a real black serpentine or pyroxene...Mel
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Jul 9, 2015 10:08:47 GMT -5
I see some gold color to it too-cut it open to see whats mixed with it.....
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Post by orrum on Jul 9, 2015 11:20:47 GMT -5
Yea!#! Whack it, slab it, cut that baby!!!
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Post by broseph82 on Jul 9, 2015 16:29:04 GMT -5
I say basalt
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lilacmoth
starting to spend too much on rocks
Member since March 2015
Posts: 160
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Post by lilacmoth on Jul 9, 2015 21:11:06 GMT -5
I can't cut it, I don't have a saw yet (apartment dweller for the next few months at least) and our local club didn't have equipment to use . I really should stick to stuff I can tumble but that rock felt really nice (does that make sense??).
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StompRocks
spending too much on rocks
Gonna need a bigger tumbler!
Member since July 2006
Posts: 263
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Post by StompRocks on Jul 13, 2015 9:12:32 GMT -5
Put on your eye protection, get a hammer and take it outside and find a good spot, where you won't get in trouble for smacking rocks, and hit it. That rock will easily split. I'm pretty sure that's basalt with quartz in it. A tumble wrecker. It's a good rock for your planters. :-)
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Post by Pat on Jul 13, 2015 14:08:30 GMT -5
Put on your eye protection, get a hammer and take it outside and find a good spot, where you won't get in trouble for smacking rocks, and hit it. That rock will easily split. I'm pretty sure that's basalt with quartz in it. A tumble wrecker. It's a good rock for your planters. :-) Good idea. Want to see the inside! I'd cover the rock with a rag, too. Keeps the flying bits from flying far.
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Post by washingtonrocks on Jul 14, 2015 12:54:54 GMT -5
Either a high silica basalt as has been mentioned, or maybe a black Nephrite that is pretty common on Puget Sound beaches. The black beach jades usually have a Feldspar component, which I'm guessing is what I'm seeing in your stone.
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