Small-Scale Concentrating and Recovery Methods
April 2011 by Bill McCuskeyThe 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.
Let’s set up a thought experiment: Suppose you had some material that ran one ounce per ton gold, which is generally considered high grade to fantastic grade depending on the circumstances.
For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.
In processing gold, silver and other valuable ores, the minerals containing the values, such as metallic gold, silver-bearing sulfides or other minerals, must be freed from the surrounding host rock before those valuable minerals can be captured.
- NEPA comments due
- Update on latest US Supreme Court suction gold dredging appeal
- Washington State tries to restrict suction gold dredging
Not long after this, I was camped out with the geologist beside the Similkameen River where he showed me the evidence that an ancient channel existed on our claim.
His findings were not exaggerated—after running 82 buckets of gravels in two days we had a remarkable 27.8 grams of gold!
The next hurdle to jump was whether the trommel motor would start again after sitting on the desert for six years without being started. The last time it had taken a three foot pipe wrench to bust it loose.
The Bawl Mill • Mining Claims—What to Know Before You File • Prospecting Underground: Use Caution • 5th Circuit Ruling May Benefit Miners • Indicator Minerals for Gold & Silver • Mud Men: Pocket Miners of Southwest Oregon Part III • Legislative and Regulatory Update • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Silver Mining Returning to Texas