The Eagle and High Peak Mines of Julian, California
September 2002 by Richard H. Peterson, PhDAt an altitude of over 4,000 feet, in the mountainous terrain of eastern San Diego County, lies the once productive Julian Mining District. Beginning with placer prospecting in 1869, this area moved rapidly into underground quartz or vein mining for gold.
Mexico is a large country, much larger than the state of Alaska. It is almost as long as the US is wide. It has climates that range from tropical rainforests in the south to barren deserts in the north. The Sierra Madre is a forested plateau that reaches elevations in excess of 10,000 feet. It parallels the west coast of the country.
…there are loads of different copper minerals, but a large number of them form first in the ground as chalcopyrite and then through the effects of weathering are changed into other minerals like malachite, cuprite and chrysocolla.
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My right rib cage took the brunt of the blow from the fall, which left me feeling partially paralyzed and in immense pain.
The republic of South Africa (pop. 45 million) lies at the southern end of the African continent, and has been responsible for much of the world’s gold and diamond production. The first Europeans to settle in the region were Dutch, but the British...
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