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.
Epithermal deposits form in the ground at shallow depths. They are popular with prospectors because can yield very rich deposits and they are widespread in the Western US.
Historically, Montana has been an important gold producer, in terms of both lodes and placers, and it still produces gold for the prospector today.
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.
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.
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
The area was mined intermittently from around 1900 to 1915, but was also mined in the late 1800s, with a total output valued at about $100,000, which is around $9.5 million at the current gold price.
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