Gold Placer

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440 Gram Natural Raw Alaskan Placer Panned Gold Nugget Flake 18 20k From Alaska
440 gram natural raw alaskan placer panned gold nugget flake 18 20k from alaska
$28.55
quality
540 Gram Natural Raw Alaskan Placer Panned Gold Nugget Flake 18 20k From Alaska
540 gram natural raw alaskan placer panned gold nugget flake 18 20k from alaska
$34.74
quality
1010 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5043
1010 gram 4 screen high purity natural alaska placer gold nugget c 5043
$52.50
quality
1682 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5040
1682 gram 4 screen high purity natural alaska placer gold nugget c 5040
$88.00
quality
1167 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5042
1167 gram 4 screen high purity natural alaska placer gold nugget c 5042
$61.00
quality
980 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5044
980 gram 4 screen high purity natural alaska placer gold nugget c 5044
$51.00
quality
966 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5017
966 gram 4 screen high purity natural alaska placer gold nugget c 5017
$50.50
quality
654 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5019
654 gram 4 screen high purity natural alaska placer gold nugget c 5019
$34.00
quality
654 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  B 5093
654 gram 4 screen high purity natural alaska placer gold nugget b 5093
$33.00
quality
1119 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5045
1119 gram 4 screen high purity natural alaska placer gold nugget c 5045
$58.00
quality
1024 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5037
1024 gram 4 screen high purity natural alaska placer gold nugget c 5037
$53.00
quality
1172 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5020
1172 gram 4 screen high purity natural alaska placer gold nugget c 5020
$61.00
quality
1186 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5041
1186 gram 4 screen high purity natural alaska placer gold nugget c 5041
$62.00
quality
570 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  B 5045
570 gram 4 screen high purity natural alaska placer gold nugget b 5045
$28.50
quality
530 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  B 5082
530 gram 4 screen high purity natural alaska placer gold nugget b 5082
$26.50
quality
1247 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5003
1247 gram 4 screen high purity natural alaska placer gold nugget c 5003
$65.00
quality
1268 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5047
1268 gram 4 screen high purity natural alaska placer gold nugget c 5047
$66.00
quality
1342 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  C 5050
1342 gram 4 screen high purity natural alaska placer gold nugget c 5050
$70.00
quality
1398 Gram 4 Screen High Purity Natural Alaska Placer Gold Nugget  B 5098
1398 gram 4 screen high purity natural alaska placer gold nugget b 5098
$70.00
quality
1050 Grams of 6 Screen High Purity Natural Alaska Placer Gold Nuggets  B 5131
1050 grams of 6 screen high purity natural alaska placer gold nuggets b 5131
$51.50
quality
992 Grams of 6 Screen High Purity Natural Alaska Placer Gold Nuggets  B 5130
992 grams of 6 screen high purity natural alaska placer gold nuggets b 5130
$48.50
quality
400 Gram Alaskan Gold Nuggets Placer Flake Fines Real Alaska Natural 18k 20k
400 gram alaskan gold nuggets placer flake fines real alaska natural 18k 20k
$26.06
quality
1000 Grams of 25 Screen Natural Alaska Placer Gold Nuggets Flakes Fines
1000 grams of 25 screen natural alaska placer gold nuggets flakes fines
$45.00
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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