Rich Placer Gold Deposit - Very Fine Gold

by Ken Cunningham
(Myrtle Point Oregon)

I have come up on a very large "Sand" Placer Gold Deposit. However, it is Micron Size in every sense of the word. Black and blonde sands are the same size as the gold. I can not determine a proper way to separate the Gold from the inclusions. Classified some @120 mesh. Some gold and material comes through and some lays on top. Tried a "Blue Bowl".(Washes out) I can't seem to capture the gold content separate? This stuff was gold mined in the 1850s/60s.

Stan's response: Hi Ken, if you are planning to gold mine on a small scale, I would try a spiral concentrator wheel and experiment with all 3 settings.

If you are planning to gold mine on a large scale, I would use a gold wash plant with jigs and a large spiral concentrating system such as Oro Industries produces in Northern California.

If those methods don't work well enough and if the material is rich enough, I would try amalgamation or leaching.

If none of that works, I would look for a new deposit with coarser gold!

Comments for Rich Placer Gold Deposit - Very Fine Gold

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Aug 14, 2017
Need a NEFFCO
by: Euey Howe

Hi I am chasing a Neffco bowl to be shipped to Australia .Please Larry Neff contact me or anyone who can help me out .Thanks

Jul 13, 2017
I Need a Neffco Gold Concentrating Bowl
by: Anonymous

I'm chasing a Neffco gold concentrating bowl. Does anyone know of one for sale at a good price please?

May 08, 2016
Want to contact you
by: Neffco Mining Gold And Technology

I am Larry of Neffco Mining. I am the builder of the Neffco Centrifuge. We can catch fine gold out of black sand down to 400 mesh. Would like to make a contact with you about your property. You can find my video operation on you tube under Neffco Mining. my email add larryneffco@aolo.com Ph. 801-828-6147

Dec 31, 2014
My equipment will grab this stuff
by: Micron Gold

Proven on North Saskatchewan River

May 13, 2014
Please send me 4 buckets
by: JR

I would love to run this stuff.

Feb 08, 2013
Recover Fine Gold
by: Anonymous

Try a Neffco concentrator bowl. Handles 2 ton per hour down to 400 mesh+. They come with gas or electric power.

Oct 16, 2012
Similar Fine Gold Situation on Alaska Beach
by: Jason Cunningham

We have big gold bearing black sand deposits on the beach where I'm mining in Alaska, 75% of the material being magnetite.

One of the processes we are using to recover the gold that is free from other metals, is to run it down a big long wide beach box (basically ribbed vinyl matting). There is no miners moss and no riffles, just like in Nome with the exception of our electro-magnet mechanical arm for getting rid of the magnetite fast enough to be able to make a profit.

A further way to increase production of this limitless beach placer is to incorporate a rocking system on the beach box, like a rocker box.

The second system is a tumbler and mercury, which we retort after the gold is amalgamated. We also have platinum group metals in the mix, which along with all the gold, is liberated from the heavy sands after running through a home made ball mill, then again run through the tumbler with mercury. Jason Cunningham

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