Using Mineral Deposit Models
June 2003 by Lawrence DeeMineral deposit models have been used in mineral exploration for thousands of years. They were obviously not called models as we use the term today, but the idea of accumulating data to predict mineral deposits is the same. Models can be valuable tools in mineral exploration and assessment and are routinely used by major mining companies in locating and evaluating mineral deposits.
Most of the world's ore deposits have been found by prospectors, not by geologists nor mining engineers. This article has been prepared with this fact in mind.
Gold and other valuable metals are often deposited in breccia and rubble formed by flat or gently-dipping faults. Such faults are commonly found in areas of crustal stretching caused by the movement of tectonic plates. Flat-faults are especially common in southeast California, southern Arizona, and northern Sonora, Mexico. However, they can be present anywhere that crustal stretching has occurred.
The future is still good for anyone wishing to use a metal detector to nuggetshoot residual and hillside eluvial placers. Since these placers are easily overlooked, the key to opening the door marked "success" is the willingness to do research.
“...I appreciate the details on the economics of the operation.”
Every year the Northwest Mining Association holds an industry trade show. Many vendors are on hand, and there are many presentations given. With thousands of folks in attendance it’s not hard to get a pulse on what is happening in the mining industry.
Q: Could you write more about the last two methods that you mentioned—the expanding chemical mixtures and the micro blasters, how and when to use them, and when not to use them?
The next morning, I retrieved the compressor and again attacked the sticky head bolt. As if by magic (and some applied physics) the head bolt sighed and finally broke loose.
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