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Clark Mountain Range
The Clark Mountain Range is located in southeastern California, north of Interstate 15 and the community of Mountain Pass. The range stretches approximately 15 miles (24 km) in a southwest-northeasterly direction, beginning in the Mojave National Preserve, and ending near Stateline Pass, about one mile (1.6 km) from the Nevada border. Clark Mountain, at 7,929 feet (2,417 m) above sea level, is the principal peak of the range. The foothills of the range are in creosote scrub and Joshua tree forests, which adjoin the dense Joshua tree woodlands atop Cima Dome. Higher up, pinyon pine and juniper grow on the "sky island" which occasional rains create above 6,000 feet (1,800 m). The north side of the crest contains a small forest of white fir trees, which is extremely difficult to reach. Clark Mountain is one of three mountain areas where these rare trees persist; Kingston and New York Mountains are the other two areas where the Rocky Mountain white fir – ''Abies co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Bernardino County, California
San Bernardino County (), officially the County of San Bernardino, is a County (United States), county located in the Southern California, southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 United States Census, 2020 U.S. Census, the population was 2,181,654, making it the fifth-most populous county in California and the List of the most populous counties in the United States, 14th-most populous in the United States. The county seat is San Bernardino, California, San Bernardino. While included within the Greater Los Angeles area, San Bernardino County is included in the Riverside, California, Riverside–San Bernardino, California, San Bernardino–Ontario, California, Ontario metropolitan statistical area, as well as the Los Angeles–Long Beach, California, Long Beach Greater Los Angeles Area, combined statistical area. With an area of , San Bernardino County is the List of the largest counties in the United States by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Mountains
The New York Mountains are a small mountain range found in northeastern San Bernardino County in California, USA. The range's northeastern area lies in southeastern Nevada. The range lies just south of the small community of Ivanpah, and north of the Lanfair Valley. The mountains are part of the mountain ranges, cones, mountains, and landforms in the Mojave National Preserve. The mountains reach an elevation of , and run in a mostly southwest-northeasterly direction between the Providence Mountains and the McCullough Range approximately five miles into Nevada and border the northwest corner of the Piute Valley of Nevada-California. The New York Mountains are part of the southeast border of the Great Basin Divide. The Piute Wash Watershed empties eastward into the Colorado River. Description The New York Mountains are a southwest by northeast trending range, about long with the northeast in Nevada. Searchlight, Nevada and Cal-Nev-Ari, Nevada lie to the northeast and east, respe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of San Bernardino County, California
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of The Mojave Desert
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cima Dome & Volcanic Field National Natural Landmark
Cima volcanic field is a volcanic field in San Bernardino County, California, close to the border with Nevada. The volcanic field covers a surface area of within the Mojave National Preserve west of the Cima Dome and consists of about 40 volcanic cones with about 60 lava flows. The volcanic cones range from simple cones over multi-cratered mountains to eroded hills, and lava flows are up to long. At least one lava tube exists in the field and can be visited. Volcanic activity in the field commenced in the Late Miocene and after a pause between 3 and 1 million years ago continued into the latest Pleistocene. The youngest cone is known as the Black Tank cone and formed about 15,000 years before present, although it is possible that it was formed through two separate eruption events; formerly it was considered to be of historical age. Geography and geology The Cima volcanic field lies in the eastern Mojave Desert of California, between the Shadow Valley in the northeast, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rare Earth Element
The rare-earth elements (REE), also called the rare-earth metals or (in context) rare-earth oxides or sometimes the lanthanides (yttrium and scandium are usually included as rare earths), are a set of 17 nearly-indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare earths have diverse applications in electrical and electronic components, lasers, glass, magnetic materials, and industrial processes. Scandium and yttrium are considered rare-earth elements because they tend to occur in the same ore deposits as the lanthanides and exhibit similar chemical properties, but have different electronic and magnetic properties. These metals tarnish slowly in air at room temperature and react slowly with cold water to form hydroxides, liberating hydrogen. They react with steam to form oxides, and at elevated temperature (400°C) ignite spontaneously. These elements and their compounds have no biological function other than in several specialized enzymes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molycorp Inc
Molycorp Inc. was an American mining corporation headquartered in Greenwood Village, Colorado. The corporation, which was formerly traded on the New York Stock Exchange, owned the Mountain Pass rare earth mine in California. It filed for bankruptcy in June 2015 after changing competitive circumstances, declining prices on output and a 2014 restructuring. It was purchased by its largest creditor Oaktree Capital Management and was reorganized as Neo Performance Materials. History Roots of the company dates back to 1919 when the Molybdenum Corporation of America, established as a subsidiary of the Electric Reduction Company, started molybdenum ore mining at Questa, New Mexico. In 1950, the Molybdenum Corporation of America bought the Mountain Pass mining claims, and began production in 1952. It changed its name to Molycorp in 1974. The corporation was acquired by Union Oil in 1977, which in turn became part of Chevron Corporation in 2005. In 2007, Molycorp Inc. was merged w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Pass Rare Earth Mine
The Mountain Pass Mine, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 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 processing facility in the United States. As of 2022, work is ongoing to restore processing capabilities for domestic light rare earth elements (LREEs) and work has been funded by the United States Department of Defense to restore processing capabilities for heavy rare earth metals (HREEs) to alleviate supply chain risk. Geology The Mountain Pass deposit is in a 1.4 billion-year-old Precambrian carbonatite intruded into gneiss. It contains 8% to 12% rare-earth oxides, mostly contained in the mineral bastnäsite. Gangue minerals include calcite, barite, and Dolomite (mineral), dolomite. It is regarded as a world-class rare-earth mineral deposit. The metals that can be extracted from it inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Pass, California
Mountain Pass is an unincorporated area, unincorporated community in San Bernardino County, California, San Bernardino County, California, United States. It is situated on Interstate 15 in the southeast mountainous desert region of the state approximately from the Nevada border at an elevation of —the highest point along I-15 between California and Nevada. It has a population of 30. The most prominent feature of the town, and its reason for existence, is the Mountain Pass Mine, an open pit mine for rare-earth elements. The mine and its associated processing facilities are owned by MP Materials, which purchased the assets out of bankruptcy on July 10, 2017. Climate Typical of the High Desert (California), High Desert, Mountain Pass has a cold semi-arid climate (Köppen climate classification ''BSk''), Winters are chilly but also sunny, with daytime highs around 50 and nighttime lows just below freezing. Summers are hot and somewhat wetter, with July, the hottest month, havin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mescal Range
The Mescal Range is a small mountain range in the eastern Mojave Desert in California about 12 miles from the Nevada state line. The range lies just to the south of Interstate 15 near Mountain Pass. The Clark Mountain Range lies to the north. It lies northwest of the Ivanpah Mountains The Ivanpah Mountains are located in the southeastern Mojave Desert of California in the United States. The range lies to the south and east of the Mescal Range and Clark Mountain Range. Paute Valley lies between the Ivanpahs and the Mescal Range ... across Paiute Valley. To the west is the broad Shadow Valley. The mountains are approximately six miles long. Mines in the range include the Mollusk, Blue Buzzard and Iron Horse mines along the eastern end.''Ivanpah, California—Nevada,'' 30x60 Minute Topographic Quadrangle, USGS, 1985 References * Mountain ranges of Southern California Mountain ranges of the Mojave Desert Mountain ranges of San Bernardino County, California {{SanBernard ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Pass
A mountain pass is a navigable route through a mountain range or over a ridge. Since many of the world's mountain ranges have presented formidable barriers to travel, passes have played a key role in trade, war, and both Human migration, human and animal migration throughout history. At lower elevations it may be called a hill pass. A mountain pass is typically formed between two volcanic peaks or created by erosion from water or wind. Overview Mountain passes make use of a gap (landform), gap, saddle (landform), saddle, col or notch (landform), notch. A topographic saddle is analogous to the mathematical concept of a saddle surface, with a saddle point marking the highest point between two valleys and the lowest point along a ridge. On a topographic map, passes are characterized by contour lines with an hourglass shape, which indicates a low spot between two higher points. In the high mountains, a difference of between the summit and the mountain is defined as a mountain pas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 15
Interstate 15 (I-15) is a major Interstate Highway System, Interstate Highway in the western United States, running through Southern California and the Intermountain West. I-15 begins near the Mexico–United States border, Mexican border in San Diego County, California, San Diego County and stretches north to Alberta, Alberta, Canada, passing through the states of California, Nevada, Arizona, Utah, Idaho, and Montana. The Interstate serves the cities of San Diego, San Bernardino, California, San Bernardino, Las Vegas, St. George, Utah, St. George, Provo, Utah, Provo, Salt Lake City, Ogden, Utah, Ogden, Pocatello, Idaho Falls, Idaho, Idaho Falls, Butte, Montana, Butte, Helena, Montana, Helena, and Great Falls, Montana, Great Falls. It also passes close to the urban areas of Los Angeles County, California, Los Angeles, Orange County, California, Orange, and Riverside County, California, Riverside counties, California. The stretches of I-15 in Idaho, Utah, and Arizona have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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