Alluvial Paystreaks

November 2018 by Matteo Oberto

The gravels in contact with the bedrock or false bedrock base are often the richest. The same facts apply to the alluvial paystreaks that are formed on gravel bars; the lowest level of the gold-bearing gravel is normally the richest.

Heavy Sands Mining

February 2013
Lately my mind has been involved with group 4 of the transition elements, namely titanium, zirconium, and hafnium. They all have similar chemical properties. Of greatest interest to economic geologists and miners is that these valuable elements often occur together in sands.

Gold Placers of the Kenai Peninsula, Alaska

January 2014
The biggest obstacle is that like many streams on the Kenai Peninsula, high water during the summer months from snow melt and rain can make dredging nearly impossible. The best dredging is in the colder months of the year.

Mining Pegmatite Deposits

July 2018

With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.

Undiscovered Placer Deposits in Alaska

November 2010
These conditions don’t just apply to Alaska and the Yukon; they apply to western Canada and even to the mountainous western United States.

All About Chalcopyrite

March 2017
…there are loads of different copper minerals, but a large number of them form first in the ground as chalcopyrite and then through the effects of weathering are changed into other minerals like malachite, cuprite and chrysocolla.

Placer Mining At Chititu Creek, Alaska

March 2015
There is reason to believe these stream valleys are still rich with gold, silver and copper.

$50 Million in Gold From 1857 Shipwreck Approved for Sale

March 2018

The gold is all for sale. Just one tiny coin alone could go for $1 million because of its combination of rarity and the history behind it...

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