Geoff
spending too much on rocks
Please add 1074 to my post number.
Member since December 2012
Posts: 446
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Post by Geoff on Jan 20, 2013 16:52:30 GMT -5
There are golf ball sized corundum crystals in Nebesna, AK. Smaller crystals are found near Chitina.
The only Ruby Creek I see that has actual Corundum is in Idaho.
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Post by helens on Jan 20, 2013 17:37:19 GMT -5
Ha! No wonder I didn't find it, I was looking under 'ruby', not corundum! Doh... LOL! Nice chart, Geoff:).
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jason12x12
freely admits to licking rocks
Member since October 2011
Posts: 798
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Post by jason12x12 on Jan 20, 2013 19:25:18 GMT -5
thanks for the discussion on it.. I would say they are harder than 440 steel .when i try to scratch it metal shows on the stone.but they are strong in color but not face grade.Pringle South Dakota is a winner i would say..thanks again,, it came with a lot of jar opal i bought..
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steveo
spending too much on rocks
Member since October 2011
Posts: 273
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Post by steveo on Jan 20, 2013 19:38:01 GMT -5
Checking specific gravity and hardness shouldn't be to hard and get you a little more information.
Mohs , Specific Gravity Ruby 9 , 4 Garnet 7.5 , 3.60-4.20
maybe SP would be hard to tell. lol
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jan 21, 2013 11:14:36 GMT -5
Rubies from the Rubie Mine at Prindel SD given me by Myra 3 of October 1914 seems very clear to me. My mother's handwriting was almost identical. The "D" in SD is poorly written as was my mother's habit. That is this is a normal D. All of the rest was clear to me as to leave no room for discussion. At least in my mind!
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Post by jakesrocks on Jan 21, 2013 11:37:23 GMT -5
Scott, I've been trying to contact a friend who knows that area around Pringle, and the old mines very well. I've seen pics of the gems he's collected. They aren't plentiful, but they do come from that area. He's a member on here, so if I can get hold of him, I'll try to get him to shed some light on your stones.
On RTH he goes by sdgoldpanner. He seldom visits here. I find him most often on facebook.
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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 Jan 21, 2013 18:52:51 GMT -5
Louis Marcus Prindle was an author of very many USGS Bulletins in the early 1900s. Mertie is a reference to the author of a 1938 publication.
USGS Bulletin 280 (820 transposed maybe) Gold Placers of the Rampart Region Alaska, Louis Marcus Prindel and Frank L Hess, 1906.
On page 37 it discusses Ruby Creek, a tributary of Minnock Creek. "In the concentrates with the gold are large quantities of garnets that sometimes reach 1 inch in diameter. A handful of garnets was obtained from a pan of dirt. There are so many of them that they give considerable trouble filling in the spaces in the riffles and must be cleaned out once or twice a day."
Are those garnets or rubies in the picture?
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jason12x12
freely admits to licking rocks
Member since October 2011
Posts: 798
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Post by jason12x12 on Jan 21, 2013 19:26:10 GMT -5
truth be known. i am not sure, the crystal structure is more indicative of ruby but color is like a garnet.. i just thought i would find someone on here that had some real experience with the location..I end up getting lots of specimin type stuff i dont care about at auctions with the other things i do want.
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