QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,640
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Post by QuailRiver on Jul 11, 2017 15:12:19 GMT -5
That last agate is out of this world! I've cut a lot of KY Agate and have seen some small sprays of what resembles sagenite but I've never seen anything like what you are showing here. If what is left of this piece is solid enough to slice and polish a slab thin enough for light to pass through I'll bet being back-lit it would be spectacular!
Larry C.
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Jul 11, 2017 16:18:24 GMT -5
Sagenite has sprays of calcite. Calcite reacts to acids like iron out. Calcite? Not sure if I should use iron out on these pieces just to find out if the included acicular crystals are calcite. Couldn't that damage the slabs if the iron out ate away all the calcite, or would the iron out actually help? Ironout won't harm agate. And calcite bubbles fast. As soon as test is positive or negative you rinse away ironout. You won't even see a change in the stone. 3 seconds max |
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Post by adam on Jul 12, 2017 6:11:02 GMT -5
That last agate is out of this world! I've cut a lot of KY Agate and have seen some small sprays of what resembles sagenite but I've never seen anything like what you are showing here. If what is left of this piece is solid enough to slice and polish a slab thin enough for light to pass through I'll bet being back-lit it would be spectacular! Larry C. Yep yep, maybe there is more of this sagenite to be found? When I had found the nodule in a creek, it was only half of the original, weathered, and the other half was long gone, nowhere to be seen. You say you have worked with KY agate and have seen small sprays of sagenite? Who knows what can be found in those creeks of Estill county. I've observed calcite in some KY agate geodes, but never sagenite. I wish I could be up in Estill county more in the right area to hunt agates, but, until I get my own car, travel to and fro will be difficult. I always have my own county to hunt in... at least. Randy knows more about KY agate than he lets on. If me, and him, and whoever else wants to join, could ever get together and spend a single day to hunt some quality agate, that'd be radical. So radical. |
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Post by Garage Rocker on Jul 12, 2017 8:22:57 GMT -5
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Post by adam on Jul 17, 2017 12:07:27 GMT -5
Calcite? Not sure if I should use iron out on these pieces just to find out if the included acicular crystals are calcite. Couldn't that damage the slabs if the iron out ate away all the calcite, or would the iron out actually help? Ironout won't harm agate. And calcite bubbles fast. As soon as test is positive or negative you rinse away ironout. You won't even see a change in the stone. 3 seconds max Could the sagenite crystals be rutile? I will see if any of the slabs are thin enough for backlight. |
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Jul 17, 2017 12:08:50 GMT -5
Ironout won't harm agate. And calcite bubbles fast. As soon as test is positive or negative you rinse away ironout. You won't even see a change in the stone. 3 seconds max Could the sagenite crystals be rutile? I will see if any of the slabs are thin enough for backlight. Apparently opinions differ. So, yes, some seem to agree rutile needles could be sagenite. They won't react with ironout |
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Post by Pat on Jul 17, 2017 12:17:36 GMT -5
Your last specimen---the one with sagenite (or maybe not) is beautiful!! Thanks for the show.
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Post by fantastic5 on Jul 17, 2017 12:38:43 GMT -5
Holy Cow! That last one is absolutely stunning. If you have access to creeks, I have access to a vehicle and would gladly make the drive from Tennessee. Keep posting pictures of your finds. They are amazing!!
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Post by adam on Jul 17, 2017 12:48:42 GMT -5
That last agate is out of this world! I've cut a lot of KY Agate and have seen some small sprays of what resembles sagenite but I've never seen anything like what you are showing here. If what is left of this piece is solid enough to slice and polish a slab thin enough for light to pass through I'll bet being back-lit it would be spectacular! Larry C. Of the nearly half a dozen slabs I have, none of them are thin enough to be back lit. My fault, I told catmandewe to cut them at 3/8''. Wasn't thinking I might want some thin slices to observe their translucency and colors. |
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Post by adam on Nov 1, 2017 5:39:23 GMT -5
Update: Turns out, after close examination, this geode piece contains honey calcite, not quartz.  Anyone else agree? Those crystals don't seem like quartz anymore. In the past, I have found deep orange crystals like these before in geodes, but I thought they were all quartz.  Now I know, there must be both honey colored calcite and honey colored quartz occurring within geodes in the same area. Nice. |
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Post by HankRocks on Nov 1, 2017 9:03:13 GMT -5
It does appear to be Calcite, not always easy to tell from a picture. A closeup would make id easier.
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Post by adam on Oct 14, 2018 19:24:16 GMT -5
Got around to taking some photos of some rough beauties. Flesh pink botryoidal chalcedony on one side, milky white quartz crystals on the other. www.flickr.com/photos/163078198@N03/43501097330/in/dateposted-public/If this isn't botryoidal chalcedony, then I was thinking smithsonite, but it really might just be a unique form of chalcedony. www.flickr.com/photos/163078198@N03/44404003205/in/dateposted-public/Partial agate geode. From Madison County, KY, I believe(not amazing by any means, but not bland enough to go unposted) www.flickr.com/photos/163078198@N03/45267692872/in/dateposted-public/Cluster of red, tiny quartz crystals which may contain smaller idk minerals. www.flickr.com/photos/163078198@N03/44593699404/in/dateposted-public/Will receive some malachite and chrysocolla in the mail this week, will get around to tumbling them and will post results. Have never tumbled soft stones before, and never worked with these particular stones(I'm as excited as a kid in a candy shop). Oh wait, one more piece of eye candy. Not much for Kentucky agate, but hey. I found it a few weeks back, now I'm tumbling it down, hoping it'll take a fantastic polish. www.flickr.com/photos/163078198@N03/45276213332/in/dateposted-public/ |
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Post by aDave on Oct 14, 2018 20:24:42 GMT -5
Got around to taking some photos of some rough beauties. Flesh pink botryoidal chalcedony on one side, milky white quartz crystals on the other. www.flickr.com/photos/163078198@N03/43501097330/in/dateposted-public/If this isn't botryoidal chalcedony, then I was thinking smithsonite, but it really might just be a unique form of chalcedony. www.flickr.com/photos/163078198@N03/44404003205/in/dateposted-public/Partial agate geode. From Madison County, KY, I believe(not amazing by any means, but not bland enough to go unposted) www.flickr.com/photos/163078198@N03/45267692872/in/dateposted-public/Cluster of red, tiny quartz crystals which may contain smaller idk minerals. www.flickr.com/photos/163078198@N03/44593699404/in/dateposted-public/Will receive some malachite and chrysocolla in the mail this week, will get around to tumbling them and will post results. Have never tumbled soft stones before, and never worked with these particular stones(I'm as excited as a kid in a candy shop). Oh wait, one more piece of eye candy. Not much for Kentucky agate, but hey. I found it a few weeks back, now I'm tumbling it down, hoping it'll take a fantastic polish. www.flickr.com/photos/163078198@N03/45276213332/in/dateposted-public/ You need to figure out how to post your photos. Most folks, including me, won't click on an outside link just to look at things. That said, I'll help you out. (When you are working within Flickr, select the BBcode after clicking on the curved arrow for your image. You can place it right in your post.) Here are your photos:  DSCF5169 by Adam Cochran, on Flickr  DSCF5177 by Adam Cochran, on Flickr  DSCF5180 by Adam Cochran, on Flickr  DSCF5191 by Adam Cochran, on Flickr  DSCF5110 by Adam Cochran, on Flickr |
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Now I know, there must be both honey colored calcite and honey colored quartz occurring within geodes in the same area. Nice.
