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Post by stephan on Nov 12, 2020 16:13:32 GMT -5
OK, this thread is totally jasoninsd's fault! He and I were talking about Crazy Lace , and now it's a brain-worm. Much like an ear-worm, the only way to get rid of it is to share. So here is another (hopefully perpetual and active) thread dedicated to, let's say Mexican agates in general. While it is being started on a Thursday, we can alliterates this one more easily than my last one: Mexican Agate Monday. If you have something that is substantially similar to a Mexican agate that was found reasonably near the border (say Rio Grande/Falcon Lake Texas...), go ahead and add. Same goes for something found far away, but has common elemnts (say speckles in St. Egedien t-eggs). Just make sure to make it clear that you are posting it as a "common element," and let us know its birthplace I'll get the ball rolling with a couple of Crazy lace cabs:  IMG_7289_Mexican crazy lace agate shield cabochon by Stephan T., on Flickr  DSC_1446_Crazy Lace Agate by Stephan T., on Flickr and a probable snowball nodule (T-egg?)  Probable snowball agate nodule by Stephan T., on Flickr |
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Post by jasoninsd on Nov 12, 2020 18:34:54 GMT -5
I'll gladly accept the blame for the creation of this thread!  I suppose it's akin to someone singing or whistling a song and it gets stuck in your head! I know the solution to that is to start humming/whistling/singing the theme song to "The Flintstones"! (Don't believe me? Try it the next time you get a song stuck in your head! It works!) Now, back to the topic at hand...I LOVE CRAZY LACE...almost as much as Fairburns! I know this thread isn't limited to just Crazy Lace. I'm really looking forward to seeing some (okay ALL) of the contributions to this thread!  |
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Post by stephan on Nov 12, 2020 19:54:30 GMT -5
I'll gladly accept the blame for the creation of this thread!  I suppose it's akin to someone singing or whistling a song and it gets stuck in your head! I know the solution to that is to start humming/whistling/singing the theme song to "The Flintstones"! (Don't believe me? Try it the next time you get a song stuck in your head! It works!) Now, back to the topic at hand...I LOVE CRAZY LACE...almost as much as Fairburns! I know this thread isn't limited to just Crazy Lace. I'm really looking forward to seeing some (okay ALL) of the contributions to this thread!  "Welcome to the Jungle," is my ear-worm neutralizer song. |
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Post by stephan on Nov 12, 2020 20:03:57 GMT -5
I'll have to try "The Flintstones." That's funny.... Except, it'll get me thinking about dinosaurs, and... aw, geez... well, at least we already have a coprolite thread. Whew! Saved.
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RWA3006
Cave Dweller 
Member since March 2009
Posts: 4,697 
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Post by RWA3006 on Nov 12, 2020 22:55:58 GMT -5
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Post by stephan on Nov 12, 2020 23:26:24 GMT -5
And now for the nerdy post.... Crazy Lace agate is not a true agate! It contains agate regions, but it is technically classified as a jasperoid, which is different than a jasper. Jasperoids are rare Metasomatic alterations (replacements) of sedimentary deposits (usually a form of calcite). To form jasperoids, some elements are needed: an ore deposit, a salt lake and hydrothermal fluids of highly variable temperatures. As the limestone is replaced, and silica iand other minerals are deposited, vastly different structures are formed: lace agate, fortification agate, "eyes", sagenite, moss, hematite, tube agate, orbs, druzy quartz, massive quartz and even common opal. This makes for a complex, intricate and beautiful stone of amazing depth and variability. Copper, iron, barite and other minerals add to the complexity.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,697
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Post by RWA3006 on Nov 12, 2020 23:36:32 GMT -5
And now for the nerdy post.... Crazy Lace agate is not a true agate! It contains agate regions, but it is technically classified as a jasperoid, which is different than a jasper. Jasperoids are rare Metasomatic alterations (replacements) of sedimentary deposits (usually a form of calcite). To form jasperoids, some elements are needed: an ore deposit, a salt lake and hydrothermal fluids of highly variable temperatures. As the limestone is replaced, and silica iand other minerals are deposited, vastly different structures are formed: lace agate, fortification agate, "eyes", sagenite, moss, hematite, tube agate, orbs, druzy quartz, massive quartz and even common opal. This makes for a complex, intricate and beautiful stone of amazing depth and variability. Copper, iron, barite and other minerals add to the complexity. Awesome post. |
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Nov 13, 2020 9:10:24 GMT -5
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Post by stephan on Nov 13, 2020 9:42:19 GMT -5
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Nov 13, 2020 9:46:21 GMT -5
thanks! not sure if it's been the material or what but those were all done with my dremel and lot o and didnt have many issues with them coming apart at the seams but most of what I've worked on the genie hasnt fared as well. |
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Post by jasoninsd on Nov 13, 2020 10:21:38 GMT -5
stephan - I'll have to agree with RWA3006 in saying thanks for the "nerdy" post. I thoroughly enjoy understanding (or at least having the opportunity to do so) the science behind the beauty!  oldschoolrocker - I'll have to agree with Stephan and say those are well deserving of a repost! Fantastic work with the dremel! Knowing that gives me confidence I might have a shot at doing the same...well...at least similar. 
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Post by stephan on Nov 13, 2020 11:25:21 GMT -5
thanks! not sure if it's been the material or what but those were all done with my dremel and lot o and didnt have many issues with them coming apart at the seams but most of what I've worked on the genie hasnt fared as well. I've sometimes had trouble working crazy lace on the Genie, and can often see fractures in the slabs (if I can see them, at least I can work around them). I understand that this may be due to the mining practices. I guess dynamite can rough. |
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Nov 13, 2020 11:39:15 GMT -5
stephan - I'll have to agree with RWA3006 in saying thanks for the "nerdy" post. I thoroughly enjoy understanding (or at least having the opportunity to do so) the science behind the beauty! oldschoolrocker - I'll have to agree with Stephan and say those are well deserving of a repost! Fantastic work with the dremel! Knowing that gives me confidence I might have a shot at doing the same...well...at least similar. thanks bud! judging by what you already have done with the dremel I'm positive you can do the same or better than I did w dremel! |
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Post by stephan on Nov 16, 2020 13:35:17 GMT -5
It's Monday, so here is new crazy lace with some shadow agate:  DSC_3141_Crazy Lace Agate by Stephan T., on Flickr The corner at 9 o'clock had some undercutting of the pink moss and sagenite spray, but other than that, I'm very happy with it. Also, the undercutting is more noticable in the picture than in-person. |
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kyoti
has rocks in the head
Member since June 2020
Posts: 542
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Post by kyoti on Nov 16, 2020 21:36:49 GMT -5
This is a great thread stephan ! Thanks for the explanation of how crazy lace forms. It explains why I've had devlish trouble tumbling some old material I had. |
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,074
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Post by gemfeller on Nov 16, 2020 21:46:12 GMT -5
Mexico's Laguna Agate is internationally famous for its bright colors and wonderful patterns. But here's a nodule that's an exception. It has its own "personality" though: a nice field of fortification agate displaying parallax and a tremendous multicolored sagenite spray. It's a fairly large nodule, about 3 inches tall. It occupies a special spot on my display shelf.  |
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Post by stephan on Nov 16, 2020 22:10:17 GMT -5
kyoti Thanks. Yes, some of the more colorful stuff can, sometimes, be troublesome. Sometimes you can get material that’s uniformly hard, but, in my somewhat limited experience with crazy lace, it’s more common to get that with the monochrome material. gemfeller that nodule is spectacular! Amazing clarity on that shadow agate, and I don’t thing I’ve ever seen sagenite quite like that. Thanks so much for sharing.
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Nov 17, 2020 4:25:32 GMT -5
whoops, I'm a day late. meant to post this one I recently made. its Aqua Nueve Agate.  |
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Post by miket on Nov 17, 2020 12:05:43 GMT -5
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Post by stephan on Nov 17, 2020 17:26:27 GMT -5
oldschoolrocker miket the only thing that matters is that you are contributing beautiful pictures. The DOTW is just for fun... playing off Turd Tuesday and Fairburn Friday, bevcause we all know (from the Marvel Universe) that alliteration is key. I feel you on the poor organizational skills. The rocks are everywhere, and my filing system makes sense at the time, but not several hours later. I'm still working on rockpickerforever 's request for geodes (in the thunderegg thread). I'm having trouble with "g" though. Maybe we'll go Aussie and use "g'day."
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