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 Mar 6, 2011 0:11:37 GMT -5
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Post by tandl on Mar 6, 2011 9:28:16 GMT -5
someone will know . that is a real good looking piece !
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Rockpox
starting to shine!
Member since March 2010
Posts: 38
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Post by Rockpox on Mar 7, 2011 0:02:05 GMT -5
Looks like wood from the Mahogany Hills area of the Owyhees. This area is close to Jordan Craters Or. and is known for wood in this color and similar colored flower japer.
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Post by Woodyrock on Mar 10, 2011 1:35:52 GMT -5
Daniel:
You did not post a good shot of what would be end grain. Have a good look at the end to discern growth rings, and cell structure. This is a naturally tumbled piece, the end is not very distinct, but if you cut it you will be able to see this structure much better.
Woody
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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 Mar 10, 2011 18:40:17 GMT -5
Woody,
Thanks! I am a forester, I took wood in college, so this is a puzzle for me. There is no real end grain to see on this. Where it is, you can barely make it out because that is where the most soft pockets, white opal, clear agate and something black mess it all up. When I go over the whole thing I see very irregularly spaced rather narrow brownish rings with evenly distributed circular pores. The white agate in between mostly is just smooth white, but in a couple places I think I see evenly distributed pores, maybe smaller, maybe the same size. Sort of what I would call semi-ring porous. I am also thinking that I might be seeing a small branch inside a trunk, that's why it doesn't quite make sense. I can kinda make it out, but if I look hard enough I can find a picture of the Virgin Mary too, so... it really needs a cut or two to understand it better. I only have a tumbler and a Dremel tool however.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Mar 11, 2011 15:41:38 GMT -5
looks to be some type of quartz to me..................
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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 Mar 11, 2011 17:02:44 GMT -5
It has a very visible grain with pores on the end. I think it must have been either vascular plant material (probably wood), bone or ivory. It has been silicated. It is now mostly white "agate". It also contains small pockets of clear "chalcedony", and white "opal", but those are just varieties of the same thing, cryptocrystalline quartz. So yes, it is quartz.
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