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Post by oregon on Jun 29, 2021 18:08:55 GMT -5
Someone just dropped this boulder off a while back, no idea where it came from. It's hard, glassy, looks like some bluish agate with sorts of dendrites, not the typical tree pattern, but little more blobby. A few dots as well, I know Polka dot is close by, but this doesn't feel like that to me. The white opaque does not seem like Opal to me, more of a Jasper/agate. It's about 16" across and the Minor chunk cleaved off when I dropped it a while back... Second photos show some brown agate inclusions on the edge as well. Guess away, no idea here   An for those of you who love Bat Cave Jasper and haven't seen rough, here's some. You can see why slabs parallel to the layers are hard to come by. The bands are usually a thin layer, 1 or two slabs. You can also see how the other piece with the light tan top looks like it has bat droppings on top of it. Don't know that Bats (mammals) were around long enough for this to be true, but fun story. |
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Post by rockpickerforever on Jun 29, 2021 19:26:01 GMT -5
The stuff in the first two pics looks like Parral Agate. riverbendlapidary (Jeremy?) posted pics of some back on 5-13-10.
LINK HERE: Parral Agate
Several people were saying they had never seen it before. Don jakesrocks Googled it and posted this about it:
"It comes from Chihuahua, Mexico, and gets its name from a village named Hildago del Parral."
Several others said they had made cabs with it, and it takes a good shine.
Might be, kinda looks the same.
There ya go! |
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Post by oregon on Jun 29, 2021 21:28:08 GMT -5
Thanks! Definitely looks closer (if not identical) to anything else I've been able to google...
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Post by hummingbirdstones on Jun 29, 2021 21:57:06 GMT -5
My first thought was Medicine Bow agate when I saw it.
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Post by Peruano on Jun 30, 2021 6:52:37 GMT -5
I think rockpicker has hit the mark. My first guess was dendritic opal. But browsing for parral agate came up with some that has that strong blue coloration making it a strikingly likely candidate. Check the photos on the Univ. of Nebraska agate site. snr.unl.edu/data/geologysoils/agates/agatesdatabase.aspx |
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wpotterw
spending too much on rocks
Member since September 2016
Posts: 444 
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Post by wpotterw on Jun 30, 2021 9:30:11 GMT -5
Someone just dropped this boulder off a while back, no idea where it came from. It's hard, glassy, looks like some bluish agate with sorts of dendrites, not the typical tree pattern, but little more blobby. A few dots as well, I know Polka dot is close by, but this doesn't feel like that to me. The white opaque does not seem like Opal to me, more of a Jasper/agate. It's about 16" across and the Minor chunk cleaved off when I dropped it a while back... Second photos show some brown agate inclusions on the edge as well. Guess away, no idea here An for those of you who love Bat Cave Jasper, here's some of my rough. You can see why slabs parallel to the layers are hard to come by... You can also see how the other piece with the light tan top looks like it has bat droppings on top of it. Don't know that Bats (mammals) were around long enough for this to be true, but fun story. I have some amethyst sage bought a few decades ago. A lot of it is actually more white/black with minimal purple hues. It looks just like your pic. |
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Sabre52
Cave Dweller 
Me and my gal, Rosie
Member since August 2005
Posts: 20,490
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Post by Sabre52 on Jun 30, 2021 10:51:03 GMT -5
Yep, Parral Dendritic Agate. No doubt about it.
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Post by oregon on Jun 30, 2021 10:53:14 GMT -5
Thank you all. I'm not sure if I'm more amazed that so many different rocks travel around the world so far, or that so many rocks are particular to one specific location just visibly (not chemically) or that the crowd here can Id them with the collective knowledge. So this is most definitely Parral agate. Blue & Brown colors as well as the banding all fit the description. here's pic that looks off the same rock ...  |
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Post by rockpickerforever on Jun 30, 2021 23:38:35 GMT -5
Yep, Parral Dendritic Agate. No doubt about it. I was hoping you would verify, Mel Sabre52, as you were one of the posters in that old thread. Thanks.
Don't know nothing about the Bat Cave, except that's where Batman lives, lol.
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Post by MsAli on Jul 1, 2021 8:26:40 GMT -5
I do love Bat Cave. That agate is gorgeous! Something about black and white rock😍s
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Post by Rockindad on Jul 1, 2021 9:45:27 GMT -5
The stuff in the first two pics looks like Parral Agate. riverbendlapidary (Jeremy?) posted pics of some back on 5-13-10.
LINK HERE: Parral Agate
Several people were saying they had never seen it before. Don jakesrocks Googled it and posted this about it:
"It comes from Chihuahua, Mexico, and gets its name from a village named Hildago del Parral."
Several others said they had made cabs with it, and it takes a good shine.
Might be, kinda looks the same.
There ya go! Give that lady a raise, and title: Official RTH Archivist. Nice find Jean! |
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Post by victor1941 on Jul 1, 2021 10:08:03 GMT -5
This very much looks like material I purchased in the 70's. Some of mine has the little orbs and dendrites, some semi-clear with plumes/dendrites, and some like jasper with color. The cabs will polish extremely well in the vibe and are quite striking. I will show pictures in another post that actually show the variation.
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Post by stephan on Jul 1, 2021 15:49:01 GMT -5
I'm not seeing the dark lines of Parral. To me it looks like it could be Snyder's Ranch from Valley Springs, CA
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,490
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Post by Sabre52 on Jul 3, 2021 12:14:43 GMT -5
There is a somewhat similar dendritic agate from several locations in Wyoming and another from near Valley Springs, CA but the pictured type is definitely Parral.
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