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Post by 1dave on Oct 11, 2021 8:17:50 GMT -5
TRUE!  AND with uranium, iron can change iron in quartz from yellow/brown smokey quartz to amethyst!   1. Lava flow. 2. Aquifer turns to steam. 3. Tall bubble forms. 4. Basalt cools and hardens. 5. steam turns back into water. 6. The bubble becomes a vacuum chamber. 7. Basalt contracts creating multiple paths for ground water entry. 8. Outer shell of black basalt is converted to green celadonite, much falling to the floor. 9. Silica gel along with calcium, iron, etc. enters with the water, begins adhering to the surfaces - Opal, Tridymite, Cristobalite, Chalcedony, Moganite, Quartz. The cavity dries up. Repeat, repeat, repeat. 10. Uranium breaks down, radiates the quartz crystals, turning them into amethyst.  |
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Post by stephan on Oct 11, 2021 9:37:33 GMT -5
It's been a while since I posted to this thread. I don't know if Crown of Silver Psilomelane is technically an agate but it's certainly heavily impregnated with SiO2. Some variations even have drusy quartz vugs. This however is an example of one of the finer non-vuggy patterned cabs I've cut.  We'll allow it under the "and friends" clause. Cool-looking cab! |
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Post by stephan on Oct 11, 2021 9:45:36 GMT -5
stephan You should consider increasing the photo size when you post through the forum. I think there's a setting for that, right? The larger photo on Flickr shows the fine banding so much better. I'm not suggesting you post huge photos to the forum. That is, indeed, disruptive. But might you consider bumping the size just a little? OK. I increased the size to 640x640, which, I understand, is about the max people want to see. As for the the sagenite, it's kind of hard to see in the druzy areas in person, and incredibly difficult to pick up photographically/ I'll see what I can do. There isn't a whole lot of it -- just a few small sprays of it, but that, to me, is still cool. |
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Post by 1dave on Oct 11, 2021 9:58:56 GMT -5
stephan You should consider increasing the photo size when you post through the forum. I think there's a setting for that, right? The larger photo on Flickr shows the fine banding so much better. I'm not suggesting you post huge photos to the forum. That is, indeed, disruptive. But might you consider bumping the size just a little? OK. I increased the size to 640x640, which, I understand, is about the max people want to see. As for the the sagenite, it's kind of hard to see in the druzy areas in person, and incredibly difficult to pick up photographically/ I'll see what I can do. There isn't a whole lot of it -- just a few small sprays of it, but that, to me, is still cool. I like to see what is really there, so 4,000 X 4,000 is helpful . . . but 800 pixels fills the page, so macro of small areas . . . |
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Post by stephan on Oct 11, 2021 10:43:23 GMT -5
OK. I increased the size to 640x640, which, I understand, is about the max people want to see. As for the the sagenite, it's kind of hard to see in the druzy areas in person, and incredibly difficult to pick up photographically/ I'll see what I can do. There isn't a whole lot of it -- just a few small sprays of it, but that, to me, is still cool. I like to see what is really there, so 4,000 X 4,000 is helpful . . . but 800 pixels fills the page, so macro of small areas . . . If you want to see larger, click on the image, and it'll take you to Flickr, where that particular image is 3509x3509. Any larger than 600 pixels here, and people will say it's too large. |
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Post by holajonathan on Oct 11, 2021 15:36:52 GMT -5
stephan You should consider increasing the photo size when you post through the forum. I think there's a setting for that, right? The larger photo on Flickr shows the fine banding so much better. I'm not suggesting you post huge photos to the forum. That is, indeed, disruptive. But might you consider bumping the size just a little? OK. I increased the size to 640x640, which, I understand, is about the max people want to see. As for the the sagenite, it's kind of hard to see in the druzy areas in person, and incredibly difficult to pick up photographically/ I'll see what I can do. There isn't a whole lot of it -- just a few small sprays of it, but that, to me, is still cool. It's up to you how you want to display your photos, but I like 640x640 better that what you had before. Still fits comfortably on my computes and cell phone. |
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Post by stephan on Oct 11, 2021 16:47:02 GMT -5
I like larger pics for my older eyes, so I usually do the "RTH Max" of around 640 on the longest side. Note sure how it was changed in Flickr. Since it should be set to the resolution of the last one I posted, I wasn't really paying attention.
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gemfeller
Cave Dweller 
Member since June 2011
Posts: 4,074 
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Post by gemfeller on Oct 11, 2021 18:20:25 GMT -5
It's been a while since I posted to this thread. I don't know if Crown of Silver Psilomelane is technically an agate but it's certainly heavily impregnated with SiO2. Some variations even have drusy quartz vugs. This however is an example of one of the finer non-vuggy patterned cabs I've cut. We'll allow it under the "and friends" clause. Cool-looking cab! Thanks! But sticking to just Crazy Lace, here's one (apologies for the watermark but it's the only image I could find). How many of you have found blue in this material? It's the only one I've ever found.  |
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Post by stephan on Oct 11, 2021 18:44:49 GMT -5
We'll allow it under the "and friends" clause. Cool-looking cab! Thanks! But sticking to just Crazy Lace, here's one (apologies for the watermark but it's the only image I could find). How many of you have found blue in this material? It's the only one I've ever found.   Holy crud! Crazy lace agate with a landscape look? Wow! I've not seen much blue. |
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Post by jasoninsd on Oct 11, 2021 20:34:18 GMT -5
We'll allow it under the "and friends" clause. Cool-looking cab! Thanks! But sticking to just Crazy Lace, here's one (apologies for the watermark but it's the only image I could find). How many of you have found blue in this material? It's the only one I've ever found. (I'm not sure what else to say, except....  ) |
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Post by Starguy on Oct 15, 2021 13:57:01 GMT -5
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Post by hummingbirdstones on Oct 15, 2021 21:53:52 GMT -5
We'll allow it under the "and friends" clause. Cool-looking cab! Thanks! But sticking to just Crazy Lace, here's one (apologies for the watermark but it's the only image I could find). How many of you have found blue in this material? It's the only one I've ever found.
I don't think I've ever seen blue in crazy lace. Now I'm going to have to go through all the boxes and look at them real good.
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Post by holajonathan on Oct 16, 2021 2:16:31 GMT -5
Nice rough. Looks very solid (no flaky banding) |
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Post by jasoninsd on Oct 29, 2021 21:47:21 GMT -5
Here's a couple cabs I finished up last night...   |
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realrockhound
Cave Dweller
Chucking leaverite at tweekers
Member since June 2020
Posts: 4,595
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Post by realrockhound on Nov 11, 2021 0:36:59 GMT -5
Not as nice as some of the pics you guys have posted. To contribute, here's a baseball size chunk I found in my camera roll. Enjoy.  |
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realrockhound
Cave Dweller
Chucking leaverite at tweekers
Member since June 2020
Posts: 4,595
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Post by realrockhound on Nov 11, 2021 0:37:56 GMT -5
Here's a couple cabs I finished up last night... You do really nice work. |
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Post by hummingbirdstones on Nov 11, 2021 10:24:21 GMT -5
Not as nice as some of the pics you guys have posted. To contribute, here's a baseball size chunk I found in my camera roll. Enjoy. There's an amazing cab right in the middle where those black outlined "plumes" are.  |
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Post by jasoninsd on Nov 11, 2021 11:17:38 GMT -5
Not as nice as some of the pics you guys have posted. To contribute, here's a baseball size chunk I found in my camera roll. Enjoy. I can't tell if there's blue tones in that one, or if the light's just catching it right...either way, that's a stunning piece. I agree with Robin about there being an amazing cab right there in that middle section!  Here's a couple cabs I finished up last night... You do really nice work. Thanks Karl. I really appreciate that. I've got a lot of material from this same piece that's on the bottom. Unfortunately, it's riddled with those micro-fractures. They don't effect the stability per se, but they do effect the overall "aesthetic" quality of the stones. |
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,074
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Post by gemfeller on Nov 11, 2021 16:33:34 GMT -5
Here's an interesting Crazyace with "orbs" or "tubes." Nice vivid colors. And a couple of "friends." The first, Rosetta Lace, is from Mexico but I don't know the exact location. I've cut some very fine cabs from this material that show wonderful peach/apricot hues blended with reds and grays. The second is from material that was sold to me by a reputable dealer as Laguna. It may be but I'd appreciate some knowledgeable input as to origin. I know it's Mexican but I haven't seen other Laguna with these particular colors. Anyone? Crazylace  Rosetta Lace #2  Laguna?  |
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Post by stephan on Nov 29, 2021 0:17:37 GMT -5
Here's a piece I knocked out today... gorgeous parallax agate (or shadow agate, if you prefer).  DSC_0960_Crazylace freeform by Stephan T., on Flickr It comes from a slab I got from holajonathan .  DSC_0678_Crazy lace slab by Stephan T., on Flickr This piece seemed very solid, but when I gave it a good whack on a workbench, it broke very cleanly into three pieces (unlike brecciated jasper, where you usually get a very jagged, random edge). Interestingly this was in the botryoidal areas (healed fractures are solid as hell). This corresponds to something I've noticed in pieces I've received from jasoninsd , and also pieces I picked up at shows years ago. Closer examination reveals that when this happens, it always leaves a "powdery" surface (looks like extremely small druzy crystals). Sometimes I've left it, but when I grind it out, it seems softer than surrounding areas. Knowing the origins of crazy lace, this leads me to believe that, possibly, in these areas, the original limestone has not been replaced with agate. Just a theory. I had a couple of these powdery pockets open up while grinding, and left some of them as live edges. |
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