brent
fully equipped rock polisher
Member since November 2008
Posts: 1,316
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Post by brent on Mar 15, 2009 14:51:41 GMT -5
I cut what turned out to be a very interesting rhyolite from my collection of local rocks. I also took a couple cuts from one of my garnet specimens(also local).
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Post by 150FromFundy on Mar 15, 2009 18:39:43 GMT -5
I'm pretty sure you are correct on the first one being rhyolite. It can be marbleized (as shown), banded, or speckled depending on the cooling conditions. I have some mini-slabs similar to yours grinding away right now. I'm curious to see if they will take a polish. A bit of an experiment.
What really blows me away, your first one looks identical to what I can collect on Bay of Fundy beaches. A very long way away!
150FromFundy
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brent
fully equipped rock polisher
Member since November 2008
Posts: 1,316
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Post by brent on Mar 16, 2009 7:33:28 GMT -5
One of the first rocks I collected when I got back into rockhounding was a gniess rock. When I was trying to I.D. it, I found the same type of rock in Scotland. Make our planet just a little smaller. You should post pics of your rhyolite so we can compare.
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