The Wisdom of Mark Twain—And Tales of Cheating the Unwary Prospector
June 2012 by R. V. LarsonI (enjoy) Twain’s description of a gold mine, “A hole in the ground with a liar at the top.” Some humor here? You bet, but I’m sure he meant it to be a real eye opener as well.
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
...I would bet considerably more lode gold and silver remains to be found in this area, and there are possibilities for small placers and nugget shooting.
Nevada produces about 75% of all the gold mined in the US. This means that all the other 49 states combined only produce 25%, and this includes California, Alaska and Arizona.
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
A few years ago I had a tremendous opportunity to visit Australia and hunt for gold there. The geology of the gold deposits there was somewhat different from what I was used to here in the US. I learned a lot about greenstone belt gold deposits while prospecting them in person, and it was an amazing trip.
How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
The Bawl Mill • Our Readers Say • Iowa Hill District • Gold Deposition and Gradients of Placer Streams—Part I • Pursuing Rare Earths in Wyoming • The Mole • Prospecting for Copper Ores—Part I • Repair / Replace Tax Rule Changes • Colorado Mining Association Appeals Roadless Ruling • Ganes Creek Hits 10 Years—Part II • Fifteen and Counting • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices