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Post by Rockoonz on Aug 19, 2013 17:08:21 GMT -5
We went to a living estate sale Saturday, found a few good scores. Coprolite;   Green Tree agate;  Turitella Agate;  And the IDK's First a nodule that looks like maybe some type of Mexican lace;  I have no guess on this one, jasper and agate with plumes all in the same piece;  This was called coal, elizabeth thinks it's really Jet, how to tell the difference?  We also got a bunch of crystal points, trilobites, corundum, and crinoid fossils, no pics yet. Turitella is already in the saw, coprolite next. Lee |
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Post by rockpickerforever on Aug 19, 2013 17:47:06 GMT -5
Lee, when you cut the coprolite (and the turitella), see if you can smell it cutting. The smell is very distinctive.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 20, 2013 14:59:21 GMT -5
it seems that coal and jet are both organic origin carbon but jet is formed from wood and coal from whatever forms coal.
Nice buys Lee! Congrats.
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Post by deb193redux on Aug 20, 2013 15:11:42 GMT -5
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billg22
spending too much on rocks
Member since November 2011
Posts: 451
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Post by billg22 on Aug 20, 2013 15:25:25 GMT -5
Urban rockhounding? I want to hound there. Where?
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Post by Rockoonz on Aug 20, 2013 19:08:18 GMT -5
It's was in Portland OR. They will repeat on 31 Aug, probably for the last time.
Lee
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Post by helens on Aug 20, 2013 19:57:28 GMT -5
That pink round one is gorgeous!!
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Post by Rockoonz on Aug 20, 2013 22:03:32 GMT -5
Lee, when you cut the coprolite (and the turitella), see if you can smell it cutting. The smell is very distinctive. I don't notice it so much in the saws, stinky oil and all, but when I get pretty much any kind of fossil on the grinders and sanders they do have their various dead stuff smells. I find it especially curious the way bone smells so much like actual unpetrified bone or antler. Also the way the bone bleeds red when grinding. Lee |
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Aug 22, 2013 18:37:04 GMT -5
I had heard coprolite smelled like poo, but not the turritella and the like smelled dead.
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Post by Woodyrock on Sept 4, 2013 1:39:09 GMT -5
If you are cutting using water, or white mineral oil the smell will be very noticeable, especially Turritella. Some coprolite is also pretty nasty. There is a paleo guy at UC specializing in coprolite analyzing for plants, and animals the dino eat. To do so, he dissolves the silica from the coprolite using fluoric acid. With the silica gone, the odour returns.
Woody
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Post by beefjello on Sept 4, 2013 8:42:07 GMT -5
That's some nice colorful poop! Man did I just say that? lol
Nice finds Lee! Did you go back on the 31st?
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Sept 4, 2013 8:56:29 GMT -5
That is some awesome rock especially if the turitella is solid. I bought some that just falls apart when cut.
By the looks of the coprolite I must have a bunch of it here. I am going to have to try the smell test. There were dinos all over this place and the they are digging them up everywhere.
Jim
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,718 
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Post by Fossilman on Sept 4, 2013 10:45:03 GMT -5
Nice haul!!! Coal has a certain smell to it(Some will leave a dark mark on your fingers too,when handled) and will have a low tolerance to breakage...Lived in coal country most of my life..
Need to spray it with sealer to keep it looking good...
I was a weird kid and use to eat coal...LOL
Those other finds really "POP" too!
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