Gold Placer

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470 Gram Natural Raw Alaskan Placer 18k 20k Gold Nugget Flake Fines Dust Alaska
470 gram natural raw alaskan placer 18k 20k gold nugget flake fines dust alaska
$30.11
quality
SS CENTRAL AMERICA quarter OZ SILVER WITH PLACER GOLD SCARCE
ss central america quarter oz silver with placer gold scarce
$24.95
quality
430 Gram Natural Raw Alaskan Placer Panned Gold Nugget Flake 18 20k From Alaska
430 gram natural raw alaskan placer panned gold nugget flake 18 20k from alaska
$27.66
quality
520 Gram Gold 18 20k Alaska Natural Raw Placer Alaskan Nugget Bering Flake Fine
520 gram gold 18 20k alaska natural raw placer alaskan nugget bering flake fine
$33.64
quality
Genuine Natural N California 3683 Gram Placer Gold Nugget Bullion
genuine natural n california 3683 gram placer gold nugget bullion
$158.00
quality
Genuine Natural N California 4419 Gram Placer Gold Nugget Bullion
genuine natural n california 4419 gram placer gold nugget bullion
$195.00
quality
Genuine Natural N California 2512 Gram Placer Gold Nugget Bullion
genuine natural n california 2512 gram placer gold nugget bullion
$114.00
quality
Genuine Natural N California 2310 Gram Placer Gold Nugget Bullion
genuine natural n california 2310 gram placer gold nugget bullion
$103.00
quality
Genuine Natural N California 2306 Gram Placer Gold Nugget Bullion
genuine natural n california 2306 gram placer gold nugget bullion
$104.00
quality
HUGE GOLD NUGGET Alaskan 103 GRAMS Natural Placer
huge gold nugget alaskan 103 grams natural placer
$449.00
quality
490 Gram Bering Sea Gold Nugget Natural Raw Alaskan Placer Flake 18k Alaska
490 gram bering sea gold nugget natural raw alaskan placer flake 18k alaska
$31.38
quality
580 Gram Gold 18 20k Alaska Natural Raw Placer Alaskan Nugget Bering Flake Fine
580 gram gold 18 20k alaska natural raw placer alaskan nugget bering flake fine
$36.90
quality
440 Gram Bering Sea Gold Nugget Natural Raw Alaskan Placer Flake 18k Alaska
440 gram bering sea gold nugget natural raw alaskan placer flake 18k alaska
$28.55
quality
Genuine Natural N California 1540 Gram Placer Gold Nugget Bullion
genuine natural n california 1540 gram placer gold nugget bullion
$72.00
quality
Genuine Natural N California 2063 Gram Placer Gold Nugget Bullion
genuine natural n california 2063 gram placer gold nugget bullion
$96.00
quality
540 Gram Bering Sea Gold Nugget Natural Raw Alaskan Placer Flake 18k Alaska
540 gram bering sea gold nugget natural raw alaskan placer flake 18k alaska
$34.74
quality
400 Gram Natural Raw Alaskan Placer Panned Gold Nugget Flake 18 20k From Alaska
400 gram natural raw alaskan placer panned gold nugget flake 18 20k from alaska
$26.06
quality
Estat Antique Placer Gold Nuggets 20 grams Specimen 85x10mm New Old Stock
estat antique placer gold nuggets 20 grams specimen 85x10mm new old stock
$100.00
quality
Estat Antique Placer Gold Nuggets 021 grams Specimen 4x10 mm Ne
estat antique placer gold nuggets 021 grams specimen 4x10 mm ne
$30.00
quality
Estat Antique Placer Gold Nuggets 029 grams Specimen 36x9 mm New Old Stock
estat antique placer gold nuggets 029 grams specimen 36x9 mm new old stock
$30.00
quality
Estat Antique Placer Gold Nuggets 030 grams Specimen 6x6 mm New Old Stock
estat antique placer gold nuggets 030 grams specimen 6x6 mm new old stock
$30.00
quality
420 Gram Natural Raw Alaskan Placer Gold Nugget Fines Flake Panned Mined Alaska
420 gram natural raw alaskan placer gold nugget fines flake panned mined alaska
$27.39
quality
570 Gram Natural Raw Alaskan Placer 18k 20k Gold Nugget Flake Fines Dust Alaska
570 gram natural raw alaskan placer 18k 20k gold nugget flake fines dust alaska
$36.04
quality
GOLD NUGGETS Alaskan 61 GRAMS Natural Placer
gold nuggets alaskan 61 grams natural placer
$289.00
quality

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Gold Placer

Frequently Asked Questions...

Why is there Uranium in Elliot lake mine?

What I mean is what is the reason of uranium existing there? why? how did it get there?.....etc


Best Answer...

Answer:

The rock at Elliot Lake is a pebble conglomerate. It is a sedimentary rock, formed, geez I can't remember but lets say about 2.7 billion years ago.

What is interesting about this deposit is that it is similar to a gold placer deposit, a deposit where heavy metallic minerals derived from erosion accumulated in sediments. There is some indication that at least some of the uranium was added by groundwater after the sediments were deposited, but most of it appears to have been transported as grains in moving water, which is pretty rare.

Uranium is mobile in water under oxidizing conditions, and forms solid minerals under reducing conditions. So, for placer deposits to form, the atmosphere had to have a low oxidation state, and that is why such deposits of uranium are only found in very old sediments.

More recent deposits of uranium tend to be associated with places where oxidizing groundwaters pass into reducing sediments.

Anyway, presumably what happened at Elliot Lake was that a lot of uranium was transported in groundwater to the surface, where it formed minerals, but not in any high concentrations. During erosion of the rock that contained these uranium minerals, the uranium minerals were moved in fast-running streams and deposited with less dense pebbles derived from regular rocks.

I have a sample of uranium ore from Elliot Lake in a bucket somewhere (I visited the mine a long time ago). The sample isn't too hazardous because the amount of uranium in it is very small, I didn't get it in one of the ruicher zones. Mostly it is pyrite and quartz pebbles. It is an interesting rock.


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