History & Geology
Enrichment of Mineral Deposits by Weathering—Part II
April 2016 by Chris Ralph
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
Additional articles that might interest you...
The Birimian Greenstone Belts of West Africa
July 2013
The country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.
The country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.
Surface Indications Of Quartz Adularia Epithermal Deposits
May 2015
I am going to keep to the basics of surface indications and visual clues in the rocks and minerals themselves that help me find gold-bearing veins in this classification of deposits.
I am going to keep to the basics of surface indications and visual clues in the rocks and minerals themselves that help me find gold-bearing veins in this classification of deposits.
Alaska's Cripple Creek Mining District
November 2011
If developed with metal detecting in mind, this virgin ground could be a bonanza for nugget hunting.
If developed with metal detecting in mind, this virgin ground could be a bonanza for nugget hunting.
Critical Minerals: Gold
August 2011
A few quick calculations show that approximately 11 tons of gold are lost each year just in the manufacture of new cell phones.
A few quick calculations show that approximately 11 tons of gold are lost each year just in the manufacture of new cell phones.
Confluence Placers
June 2013
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...
All the Gold Ever Mined...
February 2012
If you have been prospecting for any length of time, then you have probably heard something like, “All the gold ever mined would equal a cube 60 feet on each side.”
If you have been prospecting for any length of time, then you have probably heard something like, “All the gold ever mined would equal a cube 60 feet on each side.”
Gold Deposition and Gradients of Placer Streams—Part I
June 2012
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
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