The Goldfield Mining District, Nevada—Part I
June 2017 by Chris Ralph
An example of some of this extraordinary ore was a lot of about four tons from the Florence mine during the last days of a lease that averaged over 300 ounces of gold per ton.
While some future cobalt will come from recycling lithium batteries and other products, the coming huge need for cobalt is virtually a perfect storm of heavy demand and insufficient supply.
For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.
Even though these were some of the earliest placer deposits to be worked, there is still plenty of gold left today—it just takes more work to recover. Knowing about the old locations where gold has been found is the first step to success.
Gold has always been noted to have an affinity for quartz to such a degree prospectors almost always dig on quartz veins in a search for the precious metal.
The strike and the dip of the veins can be broken down into two categories: veins in the eastern area and along Lander Hill, and the veins in the southwestern portion of the district.
He found 5 to 7 feet of gravel containing half an ounce per yard. This started a rush of placer activity and several other shafts were sunk, with some large multi-ounce nuggets being found.
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
The Bawl Mill • Ask The Experts: What indicator rocks should I be looking for in northern Nevada? • Ask The Experts: What to do with scheelite • Ask The Experts: Small-scale drilling • Quartzsite Gives Up Some Big Gold • Prospecting After Winter Storms • How to Stake Your Own Claim—Researching Mining Claims • The Birthday Nugget Patch • MMAC Update • Volume is the Key to Success • Getting Started • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices