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Post by 1dave on Aug 21, 2016 8:04:52 GMT -5
Agate is the rock most often appreciated and worked with by rockhounds. Here is a puzzle for you. I found this image of a Scottish "pebble" on " Meaning of Agate." What information of it's history (HINT- began at outside bottom and exterior, worked from outer shell to the center. Notice entrance and exit points!) can YOU deduce? A few of the more obvious changes numbered in green. 1. first arrivals - grow into plumes, tubes, etc. 2. multiple bands of moganite, chalcedony and quartzine adhering to all outer walls ("fortification agate") 3. a few tiny layers of "waterline agate" 4. a few more bands of chalcedony (re-heated by another eruption?) 5. layers of blue waterline agate 6. a lens of quartz crystals (mostly re-dissolved) 7. quartz crystals clinging to all walls (again mostly re-dissolved) 8. different colored fortification agate entering from multiple points, each with different minerals providing different colors. Note how each new fill dissolved different portions of previous fills, changing the shape of the remaining inner chamber! EDIT: (from further down the thread)
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Post by fernwood on Aug 24, 2016 23:36:07 GMT -5
VEry interesting dissection of history this agate had.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,666
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Post by Fossilman on Aug 25, 2016 18:04:50 GMT -5
Thanks!
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Post by 1dave on Aug 28, 2016 10:30:45 GMT -5
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Post by pauls on Aug 29, 2016 0:10:03 GMT -5
I second 1dave on that www.Quartzpage.de The guy is a complete Silica fanatic, Quartz in all its forms, Agate, Flint, Jasper, Sard, Carnelian, Onyx and more, plus the crystalline varieties Rose, Smokey, Tiger eye etc etc etc. Beautiful photos, great descriptions and diagrams, a wealth of good information.
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Erich
spending too much on rocks
Member since November 2015
Posts: 411
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Post by Erich on Aug 29, 2016 7:26:42 GMT -5
Thanks for the link 1Dave, it gave me a new appreciation of the many species of quartz.
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Post by 1dave on Aug 29, 2016 10:32:21 GMT -5
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Post by 1dave on Aug 30, 2016 12:23:31 GMT -5
After a long hiatus for various reasons, I should be coming back on line soon. I will check the files and see what is up. the media fire site years ago had an issue with setting up alarms, but I reused the site once it was cleaned up. The other site I had used was file4share, but they started requiring logins and passwords, and I know that many people out there avoid joining sites. I just wanted people to be able to click on the link and get the file. With the arse ended people out there who live to cause grief I others, the internet always runs the risk of virus and malware. Pain in the gluteus Maximus. So, sorry for being gone., but I just needed a break. I have collected a ton of new material, esp from Oregon with the help of a couple people, and look forward to finish the last belated Southern Volume. I am happy that people have found this tool useful, and thank you for all who have given their time and images for this project. Mel, huge apology for disappearing. Will talk to you offline. Got your MSG from Greg. Glad he had a chance to visit. Lowell
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 1, 2016 16:46:49 GMT -5
After a long hiatus for various reasons, I should be coming back on line soon. I will check the files and see what is up. the media fire site years ago had an issue with setting up alarms, but I reused the site once it was cleaned up. The other site I had used was file4share, but they started requiring logins and passwords, and I know that many people out there avoid joining sites. I just wanted people to be able to click on the link and get the file. With the arse ended people out there who live to cause grief I others, the internet always runs the risk of virus and malware. Pain in the gluteus Maximus. So, sorry for being gone., but I just needed a break. I have collected a ton of new material, esp from Oregon with the help of a couple people, and look forward to finish the last belated Southern Volume. I am happy that people have found this tool useful, and thank you for all who have given their time and images for this project. Mel, huge apology for disappearing. Will talk to you offline. Got your MSG from Greg. Glad he had a chance to visit. Lowell Does this mean Lowell is coming back soon? He is a great dude. He guided my first run to the Cady's. I owe him for that. Hey Lowell!! Hope all is well.
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stonedape
starting to spend too much on rocks
Member since July 2016
Posts: 116
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Post by stonedape on Sept 26, 2016 11:47:25 GMT -5
I am going to have to read a lot of the info in that link. I own part of a large geode. Its probably a foot across and has hundereds of quartz crystals growing out of it. I was told it is "alive", meaning still growing. Not sure how true that is but I am sure when I read all the info in that link I will find out.
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 10:39:27 GMT -5
My husband found an agate in Wyoming as a child...it is a large rock and we want it cut by a bonded professional...any ideas where to get one? Having no luck online...always being directed to supplies only.
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zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
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Post by zarguy on Oct 11, 2016 10:52:32 GMT -5
mustang1 Please tell us where you & the rock are located. Someone on this forum can cut the rock or direct you to someone. As for "bonded professional", we know our stuff, but lack documentation. We don't need no stinkin' badges. Lynn
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 11:04:20 GMT -5
We now live in Wisconsin...appreciate the idea of not needing a "bonded" badge, however, this is very important to him and I want to get it done right as a gift to him. Just don't have the experience of rock cutting and need this to be done by an expert :-)) Thanks for another help you can give.
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Post by jakesrocks on Oct 11, 2016 11:09:17 GMT -5
Bonded professional agate slicer ? Never heard of such a critter, and I've been in this game since the early 50's.
Like Lynn said, let us know where you and the agate are located. Also the measurements of your agate. Chances are that one of our members lives within easy driving of you, and has a saw large enough to handle your agate. If not, I know someone who has access to a really big drag saw, but the saw is located in Oregon.
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 11:12:18 GMT -5
Bonded professional agate slicer ? Never heard of such a critter, and I've been in this game since the early 50's. Like Lynn said, let us know where you and the agate are located. Also the measurements of your agate. Chances are that one of our members lives within easy driving of you, and has a saw large enough to handle your agate. If not, I know someone who has access to a really big drag saw, but the saw is located in Oregon.
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 11:15:44 GMT -5
We live in Central Wisconsin now...our agate is approximately 10x10
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 11:17:03 GMT -5
We live in Central Wisconsin now...our agate is approximately 10x10
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Post by Pat on Oct 11, 2016 11:19:39 GMT -5
I've never heard of a bonded rock cutter.
I'd follow the advice given. Lots of very experienced rock cutters here.
Hope you post photos of before snd after.
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mustang1
off to a rocking start
Member since October 2016
Posts: 7
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Post by mustang1 on Oct 11, 2016 11:21:01 GMT -5
Be happy to...hope someone near Antigo/Wausau region reads this and responds😊
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metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
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Post by metalsmith on Oct 11, 2016 13:16:22 GMT -5
I've never heard of a bonded rock cutter. I'd follow the advice given. Lots of very experienced rock cutters here. Hope you post photos of before snd after. I believe that by 'bonded' cutter it is intended - correct me if I'm wrong - that the cutter would carry insurance to cover for the event that the agate is damaged (by a negigent approach other than the required cutting). This might be something that can be arranged as a one-off with an insurance broker. Of course it would come at a cost that would have to be passed on to the customer, but it would be correct for the cutter to arrange it. As an alternative, in lieu of in lieu of insurance the agate owners might satisfy themselves that the chosen cutter is up to the job by reviewing their work. The title of this board - rock tumbling hobby - seriously undersells the skills and experience of some folk on here. If it were me, I'd be willing to pay postage to get my rock to where it needs to go (and insure the trip) rather than default to the nearest cutter.
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