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bababooey
15:51:34 Wed
Dec 11 2013

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Fourth of July Valley placer

GOLD PLACERS BETWEEN WOODCHOPPER AND FOURTH OF JULY CREEKS, UPPER YUKON RIVER.


MINERAL RESOURCES OF ALASKA, 1911.
SURVEYS AND INVESTIGATIONS.



Gold price 1911 $18.92!!

The bedrock of Fourth of July Valley from the mouth to Crowley Creek is predominantly limestone, which at the point where the creek enters the Yukon Valley forms picturesquely weathered cliffs that tower above the stream on its western side. Upper Carboniferous
fossils are abundant in similar limestone near the mouth of Michigan Creek, and the limestones at both these localities are regarded as of the same age and are correlated with upper Carboniferous limestones
on the north side of the Yukon above Nation River, described by Brooks and Kindle. 1 The limestones occur as massive beds, which at some localities have been so folded as to be in a vertical position,
and at others, where cut by the Yukon, form conspicuous open folds.
The bedrock from Crowley Creek to the head of Fourth of July Creek and around all the headwaters, so far as observed, is conglomerate, which is continuous with the conglomerate of Seventymile River, whose age has been determined as Tertiary. Along the Seventymile these rocks have in places been closely folded and here and there the beds are nearly vertical. Their structure on the ridges is for the most part obscured by the gravel into which they have weathered. It has been rather definitely determined that the gold of the placers has been derived from this conglomerate, the only portion of the Fourth of July Valley and its tributaries where gold has been mined being those areas where the conglomerate is the bedrock and where the streams have had no access to any other bedrock.
Most of the work on the main creek has been confined to about six claims. The depth to bedrock averages about 9 feet and the thickness of gravel that is being mined is 5 to s 6 feet. Most of the gravel is
comparatively fine, the largest pebbles being about 6 inches in diameter, but it includes a few bowlders of quartzfte and hard Paleozoic conglomerate, 3 feet or more in diameter. All pebbles and bowlders observed were well worn, and there is but little doubt that all
have been derived from the Kenai conglomerate. -Most of the gold lies close to bedrock, the greatest part of it being found in the lowest foot of gravel. The width over which it is found had not been determined. Most of it is in flat and rather thick flakes, the largest one-fourth inch in diameter. It is reported to range in assay value from $18.89 to $18.91 per ounce, and is recovered in amounts reported to range from $8 to $.75 per box length of 12 by 12 square feet, the average being about $25.
The most noteworthy feature of mining during 1911 was the introduction of mechanical means for working the gravels on a larger scale. An 86-horsepower steam scraper was put in operation during the first
week in September, and those in charge of it expected to use it extensively during the summer of 1912. This scraper was transported during the summer under its own power from the Yukon a
distance of about 10 miles over the brushy valley at an average speed of about half a mile a day. Holes were dug at regular intervals in the frozen ground. A large hook was used as a deadman, and the scraper was pulled forward on its foundation of logs by means of the cables attached to the drum.
Open-cut work was being done in 1911 on Ruby Creek, which enters Fourth of July Creek about 3 miles above the point where the scraper was in use. The b,edrock of this valley, so far as observed,
is only the conglomerate. The depth to bedrock where mining was in progress is 12 to 15 feet. The gravel is made up of material derived from the conglomerate. The gold is found in about 20 inches of gravel next to bedrock. Values are reported from $50 to $75
to the box length of 12 by 12 square feet.
Operations had been'at a standstill throughout most of the season on account of lack of water.

  
bababooey
15:59:58 Wed
Dec 11 2013

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Fourth of July pic



  
dmort
17:51:42 Wed
Dec 11 2013

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Re: Fourth of July pic

There must be alot of claims on this creek.

  
bababooey
18:06:49 Wed
Dec 11 2013

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claims

easy to find out

  
geowizard
21:04:52 Wed
Dec 11 2013

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Re: claims

bababooey,

It's all under ownership of Doyon.

- Geowizard
[1 edits; Last edit by geowizard at 21:40:09 Wed Dec 11 2013]

  
bababooey
21:20:17 Wed
Dec 11 2013

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Re: claims

I only post what I find, if its for any use, I dont know, but I find it quite interesting to see an old survey from 1911. Maby one or two I find are forgotten and usable :smile: by someone here.


  
geowizard
21:38:17 Wed
Dec 11 2013

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Re: claims

bababooey,

Research is very time consuming work. I recommend looking at a known mining district and property status first and then doing research on property that is open for mineral entry.

If you are looking for areas to operate a mine in Alaska, the best source of land status is Alaska Mapper. It is an interactive mapping application available through Alaska Department of Natural Resources.

The process of locating a valuable mineral deposit based on old mining reports usually has three probabilities.

1. The gold didn't pan out or the resource was mined out.

2. The land is under present claim.

3. The land is not locatable.

Beginning with a search for locatable domain within a known mining district removes the variables that would prevent ownership through the process of discovery and location of a valid mining claim.

In summary, if the ground is not open for mineral entry - the rest of the prior history, research, etc. is mute.

- Geowizard

  
bababooey
21:56:16 Wed
Dec 11 2013

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Re: claims

again, I find it interesting, so I posted it. At least, its a nice map.

but, if you are so against it, I will stop posting old stuff.

about the doyon,....i did not know, and it interesst me not who owns the land. I dont like to mine in alaska,...
But,...this is what I found, the last 10 minutes,..

Alluvial Placer Gold Program

The goal of Doyon, Limited's Alluvial Placer Gold Program is to generate revenue to Doyon, Limited by encouraging exploration and responsible development of placer gold deposits within Doyon lands, by third parties. The program emphasizes shareholder preference.

For placer gold exploration, development and production within Doyon, Limited lands normally two agreements are required:

An Alluvial Placer Exploration License to advance a property from discovery through reserve delineation; and
An Alluvial Placer Mining Lease for development and production activities associated with both recreational and conventional placer gold mining.

Prospecting, exploring for and production of alluvial placer gold deposits on Doyon, Limited lands cannot take place without first obtaining one of these agreements. Guidelines for each agreement have been developed to assist interested parties. For further information please call (907) 459-2030.

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geowizard
22:07:04 Wed
Dec 11 2013

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Re: claims

bababooey,

Thanks for posting the old map!

- Geowizard

  

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