Glaciers and Placer Gold Deposits
November 2016 by Chris RalphIt also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
There are a number of Tertiary river channels in the area, most of which trend south-southwest. They tend to be steep, narrow, and rich with coarse gold.
Sulfides and oxides—what's the difference between the two?
While a large number of locations have yielded some placer gold, most of the state’s placer production has come from a few productive districts.
I’ve been fascinated by iron minerals for many years. So let’s take a look at this very interesting and colorful element.
The areas that were mineralized with the bedded ore were huge and vast tonnages were indicated, although they had no idea at the time.
It is a gemstone, and yet it is also closely associated with many types of metal ores. It's valuable itself but often points toward other valuable minerals—that is certainly something prospectors want to know more about!
The specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.
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