How To
Ask the Experts
April 2014 by Chris Ralph
Bismuth oxide for assaying?Gold in Quartz
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.
Proper Spacing of Placer Sample Sites
The zone of influence of each sample must be carefully considered when deciding how far sample sites should be spaced from each other.
Finding Gold with a VLF Detector—Part I
The very first thing to find out...is if the detector has the ability to be ground balanced.
Dredging Tips and Tricks: A Measure of Water Pump Efficiency
…as an academic argument, when mated to the appropriate engine, is the pump really moving water at the rate of 400 GPM?
Attention to Detail - Part II
Ditches almost always started in the high country and contoured the mountainsides, making a long drop, usually many miles away, to the goldfields. There are ditches in Trinity County that originate at seven and eight thousand feet in the Trinity Alps that carried water almost thirty miles.
The Fine Art of Panning Heavy Sands
The fine art of panning heavy sands requires a measure of patience. If you enjoy panning gold, you ought to enjoy this too, once you get the hang of it.
Lode or Placer: What Difference Does It Make?
This explains the large difference in particle sizes between placers and hydrothermal lode deposits, but also means that while the mining may be similar in some cases, the sampling and recovery techniques are usually quite different.
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• Mining for Gold and Sapphires in Montana
• Contrary to Rumors, Couple Will Keep the Saddle Ridge Hoard
• Finding Gold with a VLF Detector—Part I
• Creating Your Own Luck
• Over the Divide—Robert Michael “Mike” Corbley
• Continuing Hard Rock Exploration
• Recovering Fine Gold with Oleophilic Adhesion
• Detecting for Gold in Nevada
• Using Structural Clues to Locate Buried Placer Channels
• Gold Deposits of the Ivory Coast
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
