fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on May 14, 2007 10:31:31 GMT -5
keep us posted, Tony. How's the barrel look, is it getting chewed up with the abrasive?
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on May 12, 2007 20:31:58 GMT -5
thanks, jonje. Wishful thinking, I guess. They were so much less expensive, guess there's a reason for it.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on May 12, 2007 1:07:42 GMT -5
I looked at the Lyman vibratory tumbler online at Cabela's. Very reasonable for the size. Anybody use one of these, and what about reliability?
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on May 12, 2007 1:06:16 GMT -5
nice work! that's a beautiful jade
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 5, 2007 21:50:08 GMT -5
that is a sweet wrap, and a super sweet bug! It's a blast to find something new to science!
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jul 9, 2007 1:35:20 GMT -5
It sure looks like a porphyry to me. The llanite from TX is quite similar, with the black undercutting.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jul 8, 2007 18:20:09 GMT -5
that's a fine example of wire wrapping. Dan
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jul 8, 2007 18:21:46 GMT -5
those are both gorgeous!
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jun 17, 2007 8:17:26 GMT -5
great piece!
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 29, 2007 21:30:50 GMT -5
It looks like larvikite to me, which is a different feldspar than labradorite. In the building stone trade, it's often called Blue Pearl. It's technically a rock like granite composed almost entirely of feldspar, if I remember right, usually comes from Norway. The UT geology department has several conference rooms with all the walls covered in that.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 22, 2007 7:16:47 GMT -5
don't know what it is but it sure is interesting, what great patterns!
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 19, 2007 13:38:25 GMT -5
a rugose coral is a good guess, but the cross section doesn't have quite the distinct patterns of rays in it you normally see, unless the recrystallization has removed some of that detail. There are quite a nnumber of crinoid stems in the rock, but they still have the very distinct patterns.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 18, 2007 23:13:11 GMT -5
looks like the first one is a cross section of a sponge. The second one is an Ediacaran age soft bodied animal from Australia, Dickinsonia. Very rare, I had one once similar to this.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 11, 2007 21:48:14 GMT -5
i see segments...
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 5, 2007 10:04:59 GMT -5
looks like crinoid stems to me
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Aug 11, 2007 21:52:59 GMT -5
now I don't know what it is. Those images are a bit hard to grasp the 3-d aspect of it.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jun 26, 2007 20:01:33 GMT -5
Adrian, can you take a photo of the other side, if there's a couple of round or oval shaped 'holes' in the shell tha tare sort of on opposite ends of the shell, then it is a sea biscuit variety of echinoid. You had a good guess Curt.
That bone's definitely had some mineralization to it, it's a fossil. Of what, hard to tell. Could be a mammoth or any other sort of huge Pleistocene aged mammal. Dan
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jun 26, 2007 0:19:28 GMT -5
they sure are fulgurites! I've had piles of them, but not any for years. Those look really nice too, very glassy on the inside.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on Jun 10, 2007 0:27:51 GMT -5
superficially, it does look like one. On the last photo, the area on the right looks a bit porous. But, I see some stuff that looks like quartz. Personally, it's a bit hard to tell without having it in hand, but I don't think it is a hoof.
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fossilman
spending too much on rocks
Member since April 2007
Posts: 256
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Post by fossilman on May 18, 2007 18:00:22 GMT -5
it's not a schist, they tend to be extremely micaceous, and I see no mica in it. I would guess serpentine. How strong is the rock? If you can peel off strings of it, or chip off strings, it may be chrysotile (asbestos)
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