quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Aug 28, 2013 23:04:36 GMT -5
Found near Malheur Lake in S.E. Oregon
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 28, 2013 23:28:37 GMT -5
WTH?
What is the filling? Ain't nothing I'd eat!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Aug 29, 2013 8:06:24 GMT -5
Are you sure those are 'thunder' eggs or rotten eggs. What are you up to Larry........... LOL
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Post by deb193redux on Aug 29, 2013 8:59:30 GMT -5
could these be just some type of geode? I do not see any of the typical formation lines/pattern (i.e., star)
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,688
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Post by Fossilman on Aug 29, 2013 10:38:08 GMT -5
Look like geodes to me too.............Are they mud filled or some type of mineral? Weird! Interesting though!!
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Post by Peruano on Aug 29, 2013 17:57:52 GMT -5
That stuff looks like what I found in some Dugway geodes that I cut open. The only difference is that the material in mine was a silt, mud consistency, not dried like these appear to be. Rinse them out and see what remains. Tom
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Aug 29, 2013 23:50:35 GMT -5
We found these at an old cinder cone, the effect of heat and pressure on rock was quite impressive. Had they been filled w/chalcedony, they would have been thundereggs. One had a loose fill of dirt, the other volcanic ash. The material, as shown, dumps out easily. I've given thought to mixing some brass chips off my lathe with resin, making my own "gold filled" t-eggs. Way too much time to think. Granted, from an eye appeal standpoint, they rate about -6 on a 1 to 100 scale, but really unusual. Thanks for looking. Larry
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Aug 29, 2013 23:54:05 GMT -5
I dunno. My opinion is -6 is a bit harsh. I am thinking minus 5.5'ish............
Seriously, they are cool for what they are. Everybody shows the successes and few show the "learning experiences". I, for one, thank you for sharing!
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Post by roy on Aug 30, 2013 8:55:30 GMT -5
i have always called them mud balls yours are kool fill them with tumbled stones or something !
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,688
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Post by Fossilman on Aug 30, 2013 9:10:24 GMT -5
Don't get me wrong......They are cool and as said,glad you posted them..Thumbs up
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rockhound97058
freely admits to licking rocks
Thundereggs - Oregons Official State Rock!
Member since January 2006
Posts: 760
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Post by rockhound97058 on Sept 1, 2013 20:24:08 GMT -5
My two cents on these - I'd say they are more of a nodule formation than a true Thunderegg. Thundereggs typically have a exterior matrix composed of Rhyolites. These appear to be more Basaltic/Andesitic in nature. Interesting specimens though! I find similar material in Central Oregon which also contain various ash or burnt material within. I often find specimens with calcites attached as well.
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