Ask The Experts
December 2014 by Chris Ralph• Determining the amount of gold in a specimen
Digging in the right spots will produce excellent results, like this group of nuggets taken by the author while metal detecting during the last few months. The biggest nugget is over an ounce.
The first step in my recovery process after milling the ore to the desired size is to table it. On this particular ore, I get good results milling it to minus 100 mesh.
I cleared the connector by poking a small Phillips screwdriver through it. To ensure the bore was clean, I dunked the connector into some water and then blew it clean with my shop air compressor.
Buying a placer claim or investing in a placer mining property comes with plenty of financial risks. You need as much information as possible about the mineral deposit in order to minimize those risks.
There is a material processing principle widely used in large milling operations to improve recovery that is poorly understood by most of the micro-mining and prospecting community...
Sampling gold placers can be rewarding, but remember to treat the samples so you are not high grading or low grading your results. Learn the rules and apply them so your samples are accurate.
The problem is that extracting gold from hard rock is often a lot more difficult than processing placer gravels. Still, there is some very high-grade ore out there in many old mining areas.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts • Ask The Experts • Uncovering the Find of a Lifetime • Suction Dredging Battle Escalates • Guinea Africa: Gold, Ebola, and a Monkey Barbecue • Finding Gold in Tailing Piles • Small-Scale Processing of Hard Rock Ores • 2014 Index - Annual Tables of Content • Why Did This Silver Mine Close? - Pt III • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices