The Basics of Froth Flotation
June 2015 by Chris RalphI thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.
The gold was very chunky and much of it had quartz attached. Even back then I knew that the gold was very close to its source.
Historically, Montana has been an important gold producer, in terms of both lodes and placers, and it still produces gold for the prospector today.
In part one of this two-part series on gold in Guyana, I describe artisanal mining efforts currently winning alluvial gold from small-scale placer operations located along the lower Puruni River and its tributaries.
With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.
The Bawl Mill • Ask The Experts • Ask The Experts • Ask The Experts • Ask The Experts • Ask The Experts • Companion Gold • The Smell of Gold—Part I • A Few Tips and Tricks for Beach Mining • Direct and Constructive Notice • Moore Creek, Alaska—Then and Now • Nome Offshore Dredging Creates Challenges • Mining Journal Wins Again! • The Montanore Copper and Silver Project • Family Wins Back Seized Gold Coins • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices