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Post by tanyafrench on Jul 11, 2011 15:54:56 GMT -5
Can pudding stone be tumbled?? I have some I want to try but I'm not sure since it is a conglomerate.
Thanks for your help, Tanya
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Jul 11, 2011 16:25:38 GMT -5
Tanya: We have lots of puddingstone in our south Texas gravels from around Eagle Pass. I tumble it every now and then and some works out well while some does not. It all depends on the hardness and porosity of the material cementing together the little pebbles.. In ours, some of the puddingstones are actually jasper pebbles sealed together with agate while others have a limey stuff almost like fine grained cement. The first type takes a real good polish, though it sometimes has a few pits, while in the second form, only the jasper pebbles take a polish while the other material is too porous to shine. Another type has jasper pebbles in a kind of quartzite which is sort of a metamorphosed sandstone. This one sometimes polishes in it's entirety and sometimes not if the quartzite is too porous......Mel
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Post by tanyafrench on Jul 11, 2011 19:28:43 GMT -5
Thanks Mel, I guess I will give it a try and see what kind comes from Michigan.
Tanya
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Post by Roller on Jul 11, 2011 23:23:05 GMT -5
i agree wit sabre ... i did a lil and while i cant tumble some is coming out okay but the rest didnt !
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mp166
starting to shine!
Member since March 2011
Posts: 30
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Post by mp166 on Jul 27, 2011 10:43:47 GMT -5
I'll try to remember to get back in a month or so as I have a piece in the tumble at moment. I got the idea for trying it after seeing a beautifully polished piece in the Natural History museum in London. It was hertfordshire puddingstone the same as i'm doing now.
MP
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Post by tanyafrench on Jul 27, 2011 12:37:43 GMT -5
Thanks MP!
Tanya
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mp166
starting to shine!
Member since March 2011
Posts: 30
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Post by mp166 on Jul 29, 2011 10:37:42 GMT -5
Update I checked mine today, one side is starting to smooth and look great, but the otherside some stones have fallen out and left craters which look like they may take months of tumbling to smooth, i'll just keep putting it in different loads until theres either nothing left or I get the desired effect.
MP
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carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Jul 29, 2011 20:31:01 GMT -5
Sometimes you get a keeper. Pitting and undercutting are common. I like 'em so it's worth the risk for me.
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Post by tanyafrench on Aug 1, 2011 7:41:31 GMT -5
Carlos that is a beautiful pudding stone, thanks for sharing that.
Tanya
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Aug 1, 2011 8:28:27 GMT -5
Great looking puddingstone Carlos. I just found about a fifteen pound boulder of puddingstone in the gravel pile. It appears to be sealed with that same golden chalcedony. Now I'm thinking I might whack it up for the tumbler as it's way too big for my saw. Would be neat to crank out a batch of puddingstone if it would look anything as nice as your example.....Mel
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mp166
starting to shine!
Member since March 2011
Posts: 30
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Post by mp166 on Aug 1, 2011 10:28:06 GMT -5
Great Carlos, i'll definatly keep mine tumbling now MP
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snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Aug 1, 2011 21:54:22 GMT -5
I got some conglomerate from Jamie at Arizonamineralsandlapidary quite a while ago that was very nice rock,looked for some I had tumbled,but couldnt find it.
snuffy
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