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Post by stephan on Oct 11, 2020 22:48:56 GMT -5
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gemfeller
Cave Dweller 
Member since June 2011
Posts: 4,063 
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Post by gemfeller on Oct 12, 2020 0:08:41 GMT -5
Yes, that's much darker than the stone I tried to post that disappeared. Something's wrong with the link. Try again:  |
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Post by stephan on Oct 12, 2020 17:45:11 GMT -5
Yes, that's much darker than the stone I tried to post that disappeared. Something's wrong with the link. Try again: Very nice. |
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Post by stephan on Oct 12, 2020 17:47:51 GMT -5
Here is a better pic of the brecciated cab:  DSC_1495_Central Coast Range "Autumn leaves" brecciated jasper by Stephan T., on Flickr This was a hard picture to get. Very reflective. If you look at the full-sized version on Flickr, look at the darker brown material. It has been absolutely pulverized, and looks different than the lighter, yellower material. It almost looks like the breccia came from at least two different locations, and ended up in the same place. The agate that healed it is also different than what one usually sees. It is almost water-clear. I'm used to seeing at least a hint of white, green or red, or some banding. It's almost as if this was encased in optical glass. For this reason, this is sometimes called a floating jasper. |
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Post by stephan on Oct 13, 2020 15:19:57 GMT -5
Solo pics of the dino bone cabs:  DSC_1502_Dinosaur bone #1 by Stephan T., on Flickr  DSC_1514-Dinosaur Bone #2 by Stephan T., on Flickr These two pieces are part of the set-of-four that was posted on Sunday. They are made from a slab that I stabilized with PaleoBond about 10 years ago (when I still did that sort of thing). It seems to have helped somewhat. It minimized the undercutting and crumbliness (but is still clearly softer than the agate that fills the cells. The undercutting is barely visible to the the naked eyed, and feels smooth to the fingertips (though a slight texture can be felt with your lips). The colors are true, and even though they are from nearly adjacent parts of the same slab, the colors are pretty different. I have heard unverified/conflicting rumors that yellow agate in Utah dino bone *MIGHT* contain trace amounts of uranium salts. If so, I'd love to get the first one photographed under UV light. Maybe RWA3006 or 1dave can weigh in on the veracity of this rumor. |
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Post by miket on Oct 13, 2020 15:28:23 GMT -5
 Very nice. Although I'm in the Dino Bone Fan Club also, I really do like the other two cabs as well. And just so you know, I had to pick up my dino wraps and you're right. You can feel more texture with your lips. Who knew? 
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,644
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Post by RWA3006 on Oct 13, 2020 17:11:51 GMT -5
I have heard unverified/conflicting rumors that yellow agate in Utah dino bone *MIGHT* contain trace amounts of uranium salts. If so, I'd love to get the first one photographed under UV light. Maybe RWA3006 or 1dave can weigh in on the veracity of this rumor. Yes, that's true and likewise some pet wood will also trip the geiger counter. 1dave has some interesting info floating around here somewhere about the subject of where the uranium came from in this area. I recently posted two consecutive photos in this thread forum.rocktumblinghobby.com/thread/92990/understanding-material-tumbling?page=3 where the dino bone pictured was found in the same strata as the uranium mine thirty yards away. I've seen dino bone from this area fluoresce a beautiful yellow. |
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,644
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Post by RWA3006 on Oct 13, 2020 17:14:39 GMT -5
Very nice. Although I'm in the Dino Bone Fan Club also, I really do like the other two cabs as well. And just so you know, I had to pick up my dino wraps and you're right. You can feel more texture with your lips. Who knew? Put dino bone on your tongue and it sticks right onto it. Useful in the field for IDing the stuff. |
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Jahic
starting to spend too much on rocks
Member since September 2020
Posts: 139
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Post by Jahic on Oct 13, 2020 17:25:56 GMT -5
Hmm. I just picked up several slabs at a local estate sale. I’ll have to try it at risk if being the butt of a joke 😅
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Post by stephan on Oct 13, 2020 17:38:24 GMT -5
 Very nice. Although I'm in the Dino Bone Fan Club also, I really do like the other two cabs as well. And just so you know, I had to pick up my dino wraps and you're right. You can feel more texture with your lips. Who knew?  Put dino bone on your tongue and it sticks right onto it. Useful in the field for IDing the stuff. Yup, done that trick with whale bone. Yet to go for a dino bone hunt |
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,644
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Post by RWA3006 on Oct 13, 2020 18:03:58 GMT -5
Hmm. I just picked up several slabs at a local estate sale. I’ll have to try it at risk if being the butt of a joke 😅 Ever licked coprolite? I'd send you some if you need the experience. |
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Post by knave on Oct 13, 2020 19:01:18 GMT -5
Hmm. I just picked up several slabs at a local estate sale. I’ll have to try it at risk if being the butt of a joke 😅 Ever licked coprolite? I'd send you some if you need the experience. I have done this with no ill effects so far and no spasmatic rejection by the taste buds. |
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Post by miket on Oct 13, 2020 19:41:05 GMT -5
 Very nice. Although I'm in the Dino Bone Fan Club also, I really do like the other two cabs as well. And just so you know, I had to pick up my dino wraps and you're right. You can feel more texture with your lips. Who knew?  Put dino bone on your tongue and it sticks right onto it. Useful in the field for IDing the stuff. One of my sons was asking me about that on Sunday and I didn't know. Thanks for the info! |
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Post by stephan on Oct 13, 2020 20:59:03 GMT -5
Hmm. I just picked up several slabs at a local estate sale. I’ll have to try it at risk if being the butt of a joke 😅 Ever licked coprolite? I'd send you some if you need the experience. Ha ha. Yes, to mess with my nephew, after I’d made him a necklace of it. He was 5 at the time, and thought it was gross, which made it hilarious and cool at the same time. |
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Oct 13, 2020 21:44:12 GMT -5
stephan I don't recall who ID's these as Stone Canyon. Or even how I got them those many years ago. The slabs have been quietly residing in a box and I decided to cut a couple of cabs recently. I think I posted one previously. I agree that many similar-appearing types of jasper probably have been deposited over that general area.   stone canyon for sure |
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Jahic
starting to spend too much on rocks
Member since September 2020
Posts: 139
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Post by Jahic on Oct 13, 2020 23:25:51 GMT -5
There’s definitely some some variety to stone canyon.
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Post by stephan on Oct 13, 2020 23:37:47 GMT -5
stephan I don't recall who ID's these as Stone Canyon. Or even how I got them those many years ago. The slabs have been quietly residing in a box and I decided to cut a couple of cabs recently. I think I posted one previously. I agree that many similar-appearing types of jasper probably have been deposited over that general area. Deposited all over the Coast Range / San Andreas Fault, it seems |
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Post by stephan on Oct 14, 2020 13:09:18 GMT -5
And the last individual one (rhodonite):  DSC_1523_Rhodonite freeform by Stephan T., on Flickr The last of the Sunday foursome. This is a big boy, made from a square-ish, uneven slablet that had been laying around. It is almost 1cm this with a 3mm girdle! This is a rock, since it is a melange of different minerals: The pink is Rhodonite (MnSiO 3) The black is manganese oxide (MnO) The white is likely wollastonite (CaSi0 3) The gray and possibly brown are bustamite -- a mix of rhodonite and calcium oxide (CaO) |
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Jahic
starting to spend too much on rocks
Member since September 2020
Posts: 139
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Post by Jahic on Oct 14, 2020 13:28:30 GMT -5
Nice piece. I love cutting rhodonite. Cuts super easy and takes a fantastic polish. I have a mountain of slabs I need to get through.
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Post by 1dave on Oct 15, 2020 5:26:28 GMT -5
I have heard unverified/conflicting rumors that yellow agate in Utah dino bone *MIGHT* contain trace amounts of uranium salts. If so, I'd love to get the first one photographed under UV light. Maybe RWA3006 or 1dave can weigh in on the veracity of this rumor. Yes, that's true and likewise some pet wood will also trip the geiger counter. 1dave has some interesting info floating around here somewhere about the subject of where the uranium came from in this area. I recently posted two consecutive photos in this thread forum.rocktumblinghobby.com/thread/92990/understanding-material-tumbling?page=3 where the dino bone pictured was found in the same strata as the uranium mine thirty yards away. I've seen dino bone from this area fluoresce a beautiful yellow.  150 Million years ago the last segment of the Morrison formation began with the Upheaval Comet Impact in the western US. Most of it was an icy snowball, but an embedded asteroid hit 25 miles west of Moab - the Upheaval Dome crater. |
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DSC_1404_"Autumn leaves" brecciated jasper natural preforms by sdttds, on Flickr
Very nice.
Very nice.
Very nice.
