The Other Minerals of Mt. Diablo
January 2000 by Richard H. Peterson, PhDAlthough it is now known that Mount Diablo, located in Contra Costa County in the East Bay region of the San Francisco Bay Area, was the site of the largest coal mining operation in the state during the last half of the 19th century... this majestic focal point... also was the source of other minerals.
What is a gold telluride? Simply put, it is a chemical combination of gold, silver and tellurium...
Ahhh, summer camp. Lazy days frolicking at the pool. Meeting new friends and swapping stories around the campfire. Slicing steel I-beams and concrete pillars and blowing them apart with C4 high explosives.
Across and downstream of our operation was a large pile of huge boulders. It was logical to think that water forces may have deposited gold in and around these boulders. We moved our dredge over and started pulling the rock pile apart.
Jasperoid is a jasper-like siliceous rock, in which chalcedony or cryptocrystalline quartz has replaced limestone, dolomite, or shale. It forms the gangue of many important ore bodies. It is stained by iron and manganese oxides into shades of...
There is a unique anticipation that comes with waking in gold country. The long early morning rays bring warmth after a cold night. Restless nights allow thoughts of gold hidden in the ground for too long.
How to locate diamonds: This article focuses on the principal host rock for diamond and describes some gemstones (and kimberlitic indicator minerals) typically found with diamond.
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