patrock
off to a rocking start
Member since August 2015
Posts: 23
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Post by patrock on Aug 15, 2015 17:30:18 GMT -5
I found it in Eastern Missouri in a creek about 15 miles from the Mississippi river. i crudely sawed it in half. It is in a vibratory tumbler at this point with aluminum oxide 500. ![](https://onedrive.live.com/redir?resid=F9A3185D558ECBF7!235817&authkey=!ADNBXSxB1eJ0Ajs&v=3&ithint=photo%2cjpg) ![](https://dl.dropboxusercontent.com/u/8160642/20150802_132208.jpg)
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spiritstone
Cave Dweller
Member since August 2014
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Post by spiritstone on Aug 16, 2015 7:32:32 GMT -5
Cinnamon buns?
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jessiegumdrop
having dreams about rocks
Member since August 2015
Posts: 63
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Post by jessiegumdrop on Aug 16, 2015 12:30:02 GMT -5
I found it in Eastern Missouri in a creek about 15 miles from the Mississippi river. i crudely sawed it in half. It is in a vibratory tumbler at this point with aluminum oxide 500. ![](https://onedrive.live.com/redir?resid=F9A3185D558ECBF7!235817&authkey=!ADNBXSxB1eJ0Ajs&v=3&ithint=photo%2cjpg) ![](https://dl.dropboxusercontent.com/u/8160642/20150802_132208.jpg) Not sure if this is right but check it out i.imgur.com/OK4yEIB.jpgAlso Google eldonia
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Deleted
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Post by Deleted on Aug 16, 2015 15:29:02 GMT -5
If it's sandstone you better check your tumbler pretty quick, otherwise you gonna have eldonia slurry.
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patrock
off to a rocking start
Member since August 2015
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Post by patrock on Aug 16, 2015 15:44:06 GMT -5
Not sandstone. I think you are seeing my saw marks. I used a concrete saw to cut it. The very center appears to be porous but the whole thing is very hard. 7-8 Mohs. I did check the slurry a bit ago and it is polishing up VERY NICELY! I will post the finished product at the end of the week when it is finished. It is in with a about 7 pounds of mozarkite I collected with my kids and brother-in-law.
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patrock
off to a rocking start
Member since August 2015
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Post by patrock on Aug 16, 2015 15:49:50 GMT -5
I found it in Eastern Missouri in a creek about 15 miles from the Mississippi river. i crudely sawed it in half. It is in a vibratory tumbler at this point with aluminum oxide 500. ![](https://onedrive.live.com/redir?resid=F9A3185D558ECBF7!235817&authkey=!ADNBXSxB1eJ0Ajs&v=3&ithint=photo%2cjpg) ![](https://dl.dropboxusercontent.com/u/8160642/20150802_132208.jpg) You know, I was not thinking fossil. I did think it could be petrified wood. The flip side is pretty 3d almost like petrified wood. Hmm. I will check that out. Thanks. Not sure if this is right but check it out i.imgur.com/OK4yEIB.jpgAlso Google eldonia
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patrock
off to a rocking start
Member since August 2015
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Post by patrock on Aug 17, 2015 16:23:58 GMT -5
You're right! Paleozoic-cinnamon buns.
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boutoo
having dreams about rocks
Member since August 2015
Posts: 62
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Post by boutoo on Aug 17, 2015 18:01:02 GMT -5
Looks like Tigers eye to me...the colour & stripes are right for it anyhoo
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patrock
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Post by patrock on Aug 17, 2015 20:01:30 GMT -5
amygdule, that is a possibility I never thought of. There are more caves in the area than you can shake a stick at. It is doing well in the 500 and I expect it will be polished by the weekend or early next week. No hurrying these things you know.
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Deleted
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Post by Deleted on Aug 19, 2015 18:12:17 GMT -5
Not sandstone. I think you are seeing my saw marks. I used a concrete saw to cut it. The very center appears to be porous but the whole thing is very hard. 7-8 Mohs. I did check the slurry a bit ago and it is polishing up VERY NICELY! I will post the finished product at the end of the week when it is finished. It is in with a about 7 pounds of mozarkite I collected with my kids and brother-in-law. It's harder than a quartz crystal? Mohs 8? You ID for reference, is sandstone, that is the source of my query.
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Post by adam on Aug 19, 2015 18:57:31 GMT -5
Looks like the grain of petrified wood. The colors are nice. Sandstone is a rock, doubt it would take a polish.
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Deleted
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Post by Deleted on Aug 19, 2015 19:26:51 GMT -5
Stalagmite and its sister stalagtite are going to be MOHs 3.5 as far as I know. Quartzite is a sandstone that polishes. I am going out on a limb and say it's a form of rhyolite. Sabre52
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patrock
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Post by patrock on Aug 19, 2015 22:47:31 GMT -5
After 24 hours in aluminum oxide polish it is looking wet. I put it back in for a day or two more. Will have pix soon. Thanks for the comment. I will check out rhyolite.
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patrock
off to a rocking start
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Post by patrock on Aug 19, 2015 23:34:24 GMT -5
Stalagmite and its sister stalagtite are going to be MOHs 3.5 as far as I know. Quartzite is a sandstone that polishes. I am going out on a limb and say it's a form of rhyolite. Sabre52![](https://dl.dropboxusercontent.com/u/8160642/20150818_214658.jpg) $hotgunner, I really appreciate your help with the id. It looks you may be onto something. This was after 500 pre-polish. I have some other similar stuff coming out in a week or so but it is black and white. Similar pattern though. I deliberately left one side rough to show its 3d texture. As far as hardness, I would say it is right up there with quartz. I cannot be more specific on the hardness . It is chert-like. I have some quartz tumbling with it but didn't show it because it was from elsewhere.
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Deleted
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Post by Deleted on Aug 21, 2015 2:30:10 GMT -5
Greetings [patrock] firstly may i welcome you to RTH Forums, it looks like fortified Rhyolite to me. Rhyolite has the colors & fortification banding like an agate, but it is not a mineral, it is an Igneous class rock. Please check out my Sticky's below. -- Please click images to open larger images in a new Tab, same with everything that is Underlined! I currently have a 3lb Beach (UK), Lortone QT 12/66 (USA) rotaries & 2x Viking Vibrasonic (Diamond Pacific) (USA) virbrating tumblers, with Silicon Carbide grit F80, F220, F600, F1200, with Tin Oxide (1.0 micron) & Aluminum Oxide (1.0 micron & 0.3 micron) polishes. I hail from (The Barony of Seabegs) Bonnybridge, Stirlingshire, U.K, where aliens (15mb) sometimes come for a visit & about 4 miles west from that monstrosity & 7 miles west of this new monstrosity! Sticky's: their contents are resource information 1#: Vendors worldwide (2mb), 2#: How to use the forum, 3#: How to identify rocks & minerals, 4#: Save money on expensive grits & polishes, 5#: Aussie Lapidary Forum: Rock Tumbling Guide!
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patrock
off to a rocking start
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Post by patrock on Aug 23, 2015 9:32:07 GMT -5
It's petrified wood. I have no doubt left.
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patrock
off to a rocking start
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Post by patrock on Aug 24, 2015 14:12:28 GMT -5
It's petrified wood. I have no doubt left. Okay ASI Industries and $hotgunner, I now have doubt. It seems that you are correct. I am certainly a novice at this. Geology is definitely not my field. Rhyolite would explain some of the other forms that I found in the same area. ![](https://dl.dropboxusercontent.com/u/8160642/Rhyolite%20group.jpg) Here is the reverse side of the specimen in question. ![](https://dl.dropboxusercontent.com/u/8160642/Rhyolite%20back.jpg) Crude picture but you can see the form. And here is the finished face. ![](https://dl.dropboxusercontent.com/u/8160642/Closeup%20rhyolite.png) There is another similar form in the lower left. The area we were hunting in has a good deal of this type of stuff. I am a bit unclear as to how it forms. If I am understanding it correctly, magma goes through some type of laminar flow and liquids of different viscosity flowing in different directions form the layers. Does that sound correct? Thanks again.
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jamesp
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Post by jamesp on Aug 24, 2015 14:39:38 GMT -5
In cartersville Georgia there is deposits from an old cave that has stalactites piled deep from a collapse. Thinking they were silicified. One way to tell if it is possibly a stalactite is it should be(very) concentric tubes instead of concentric spheres, like pet wood and not like Brazilian agate. Rhodochrosite stalagmite ![](http://i00.i.aliimg.com/img/pb/723/829/110/110829723_348.jpg)
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patrock
off to a rocking start
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Post by patrock on Aug 24, 2015 15:01:57 GMT -5
Helpful information jamesp. That looks edible. Almost like a ham or something candied. Maybe I missed lunch.
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rockpickerforever
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RIP Jean Bradley, you are forever loved
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Post by rockpickerforever on Aug 24, 2015 15:26:49 GMT -5
As far as hardness, I would say it is right up there with quartz. I cannot be more specific on the hardness . It is chert-like. I have some quartz tumbling with it but didn't show it because it was from elsewhere. You said it, it is chert-like! Ever hear of banded chert? Pic from Google images. ![](http://www.theniftynerd.com/uploads/3/7/8/5/37854903/8150639_orig.jpg)
This is the website it is from: link
Not my pic, but I have some of this found in the nearby desert, a dead ringer. Hard, takes a good polish.. I'd say that is it.
ETA - Here's a pic of some I found. Bottom piece shaped/polished on flat lap. ![](http://i525.photobucket.com/albums/cc333/jeanatrandjproductsdotcom/Desert/Dsc10120A.jpg)
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