rockingthenorth
fully equipped rock polisher
Member since January 2012
Posts: 1,637
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Post by rockingthenorth on Feb 21, 2012 18:00:40 GMT -5
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rockingthenorth
fully equipped rock polisher
Member since January 2012
Posts: 1,637
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Post by rockingthenorth on Feb 21, 2012 18:02:37 GMT -5
#4 is more green the picture isnt that great it is cloudy out
Tammy
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Post by susand24224 on Feb 21, 2012 20:31:46 GMT -5
#1, 2, 9 and 11 look like common opal. No. 3 maybe--looks a bit rounded, though. No. 5 also -- I have seen (and have a few) with the pinkish blotches that are common opal, but I'm not sure about your photo.
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Minnesota Daniel
freely admits to licking rocks
A COUPLE LAKERS
Member since August 2011
Posts: 891
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Post by Minnesota Daniel on Feb 22, 2012 0:14:06 GMT -5
The first three look like ice dam from the gutters. Have you looked up there lately? Were they right next to the house? Those can be polished with your bare hands, but if you leave them in the sun, they'll be gone by June.
The last one looks like it might be Unakite. The rest I dunno.
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rockingthenorth
fully equipped rock polisher
Member since January 2012
Posts: 1,637
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Post by rockingthenorth on Feb 22, 2012 1:03:29 GMT -5
I know the first one is petried wood. and they are big rocks abbout 10-20 pounds 3,4,5,6 were found in wyoming 7,8,9,were found in north dacota 8,and 9 are the same rock just a side veiw I think the rest were found in south dakota. I will have to try and get better pics next time and put something down for size comparasion.
thanks for looking Tammy
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rockingthenorth
fully equipped rock polisher
Member since January 2012
Posts: 1,637
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Post by rockingthenorth on Feb 22, 2012 1:58:50 GMT -5
I looked on line and 3,4,5,6 do look like common opal, I also read it does not show FIRE as with other opals do. so I can tumble it but the moh's scale is 5-6 would have to tumble with the same hardness or can I tumble with agates.? I wondered what they were when I picked them up. LOL
Thanks Tammy
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Post by tandl on Feb 22, 2012 10:57:14 GMT -5
1-looks like opalized wood, 2-quartzite, 3-quartzite , 4-quartzite , 5-quartzite , 6-prairie agate, 7-8-opalized wood, 9-Quartz porphyry,also rhyolite porphyry , 10-Flint, 11-Unakite-epidote,quartz,orthoclase feldspar -granite
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Feb 22, 2012 17:08:38 GMT -5
Yuppers,opalized petwood on the 1st one....Alot of different kinds of quartz in the bunch too-found alot of that while I lived in Northern North Dakota...Looks like some type of agate after your quartz photo's........All of it nice....
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Post by susand24224 on Feb 22, 2012 19:49:21 GMT -5
I've tumbled lots of common opal, which was, for the most part, opalized petrified wood. Some of it is surprisingly tough, I would say harder than Mohs 5. I actually used some as filler with jasper and it didn't get too battered.
The first two photos show a lot of splintering--which is how mine looked after I sat it outside all winter and it froze repeatedly. You may have some trouble tumbling that as it has a lot of fracture points. But if you go deeper into the rock, you may find less fractures (basing this on my experience).
I do use a cushion (ceramics) and Ivory soap shavings to lessen any chipping.
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Post by Pat on Mar 12, 2012 18:24:21 GMT -5
Looks like a lot of quartz, but the last one looks like unakite.
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