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  2. Mountain Pass mine - Wikipedia

    en.wikipedia.org/wiki/Mountain_Pass_mine

    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. It is the only rare-earth mining and ...

  3. Gold in California - Wikipedia

    en.wikipedia.org/wiki/Gold_in_California

    Gold in California. Three gold nuggets from Tuolumne County, California, similar to what the early miners would have found. Gold became highly concentrated in California, United States as the result of global forces operating over hundreds of millions of years. Volcanoes, tectonic plates and erosion all combined to concentrate billions of ...

  4. List of mines in California - Wikipedia

    en.wikipedia.org/wiki/List_of_mines_in_California

    This list of mines in California is subsidiary to the list of mines article and lists working, defunct and future mines in the U.S. state of California. It is organized by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list.

  5. Geology and geological history of California - Wikipedia

    en.wikipedia.org/wiki/Geology_and_geological...

    The geology of California is highly complex, with numerous mountain ranges, substantial faulting and tectonic activity, rich natural resources and a history of both ancient and comparatively recent intense geological activity. The area formed as a series of small island arcs, deep-ocean sediments and mafic oceanic crust accreted to the western ...

  6. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...

  7. Mineral King - Wikipedia

    en.wikipedia.org/wiki/Mineral_King

    Mineral King is a 7.5-mile-long (12.1 km), 1-mile-wide (1.6 km) glacial valley in the southern Sierra Nevada. The valley floor lies at an elevation of 7,400 feet (2,300 m), while the granite peaks rising above the head of the valley reach heights of 11,000 feet (3,400 m) or more. As the crow flies, Mineral King is located about 20 miles (32 km ...

  8. Gold mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Gold_mining_in_the_United...

    It was the largest gold mining district in Southern California. [20] In 2018 California produced 140,000 troy ounces (4,400 kg) of gold from its only operating mine, the Mesquite mine (owned by Equinox Gold Corp.) in Imperial County, which restarted active mining in 2007, having been inactive since 2001. [21] [22

  9. Sierra Nevada Batholith - Wikipedia

    en.wikipedia.org/wiki/Sierra_Nevada_Batholith

    Sierra Nevada Batholith. Half Dome, Yosemite, a classic granite dome of the Sierra Nevada Batholith. The Sierra Nevada Batholith is a large batholith that is approximately 400 miles long and 60-80 miles wide which forms the core of the Sierra Nevada mountain range in California, exposed at the surface as granite. [1]