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Index / Mining & Minerals - Evaluations / Other Non-Metals

The California Geological Survey provides an annual summary of the state mineral production exclusive of oil, gas, geothermal and coal. The summary provides information on non-fuel mineral production, mining events, new permitting, exploration, and mining legislation. To provide information in a timely manner, preliminary production estimates are given. Final production data for California 2012 Non-Fuel Mineral Production will be available in the 2014 summary.

California ranked eighth in 2013 among the states in non-fuel mineral production, accounting for approximately 4.2 per cent... More →
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Find Out More »  |  Open Resource  |  2015/05/22  |  196 Report Broken   Tell A Friend

Index / Mining & Minerals - Evaluations / Other Non-Metals

Greg Klein asks what prompted Electra Stone to become the first publicly traded company to pursue jade? For starters, president John Costigan answers, a tremendous price increase. In 2004, A-grade B.C. jade was $40 a kilogram. Last year it sold for $1,800 a kilogram. Obviously something big was happening, but under the radar of other juniors. Taking advantage of the British Columbia importance to global jade supply, Electra began acquiring properties, not to mention expertise. Now, with summer exploration slated to begin imminently, the company sees jade opportunities beyond exploration and mi... More →
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Find Out More »  |  Open Resource  |  2015/07/05  |  219 Report Broken   Tell A Friend

Index / Mining & Minerals - Evaluations / Other Non-Metals

Maiko Sell reports that the process of exploring for diamonds is actually exploration for the host rock that carried the diamonds to the surface kimberlite. Kimberlite is a volcanic rock that occurs in diatremes, or narrow volcanic pipes. It may also occur in vertically oriented narrow sheets, or dikes. Once a kimberlite is found there is no guarantee that economic grades of diamonds, or any diamonds at all will be found, but it is a good start.

Diamond exploration may be broken down into three general stages - Early Exploration, Targeting, and Evaluation. When each stage is success... More →
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Find Out More »  |  Open Resource  |  2015/01/23  |  179 Report Broken   Tell A Friend
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