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Magnetite and other heavy minerals (dark) in a quartz beach sand (Chennai, India). Magnetite is sometimes found in large quantities in beach sand. Such black sands (mineral sands or iron sands) are found in various places, such as Lung Kwu Tan in Hong Kong; California, United States; and the west coast of the North Island of New Zealand. [32]
In June 2011, Richmond Mining LTD, an Australian mining company (RHM:ASX), received a special use permit to develop the Buena Vista Iron Ore Mine in Churchill County, Nevada. The permit includes a 25 miles (40 km) slurry pipeline north to Colado Siding [ 6 ] near Interstate 80 and annual use of up to 1,750 acre-feet (570,000,000 US gal) of water.
The Mountain Pass Rare Earth Mine and Processing Facility, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 53 miles (85 km) southwest of Las Vegas, Nevada. In 2020 the mine supplied 15.8% of the world's rare-earth production.
Sand used for mining typically had anywhere from 19% magnetite to as low as 2%. The ironsand typically had to be separated from the sand mixture. Because the magnetite is usually heavier than quartz, feldspar, or other minerals, separation was usually done by washing it in sluice boxes (a method similar to gold panning but on a larger scale).
Argonaut Mining Company: 1893–1942 registered as California Historical Landmark #786. Golden Fleece Tunnel: Westville: Golden Fleece Mining & Milling Co. Iron Mountain Mine: Redding: Kennedy Mine: Jackson: 1886–1942 South of Sutter Gold Mine Locarno Mine
In the 1980s, Phil Gillibrand of the P.W. Gillibrand Company made plans to strip mine ilmenite and magnetite at multiple sites in what would later become the Magic Mountain Wilderness between the peak and Soledad Canyon. [13] These plans were approved in 1991 but never materialized. [14]
Placer mining is an important source of gold, and was the main technique used in the early years of many gold rushes, including the California Gold Rush. Types of placer deposits include alluvium, eluvium, beach placers, aeolian placers and paleo-placers. [2] Placer materials must be both dense and resistant to weathering processes. To ...
Gold mining in California (2 C, 7 P) M. Mines in California (3 C, 4 P) Mining communities in California (1 C, 38 P) Mining museums in California (17 P) R.