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Pinacate Mining District
The Pinacate Mining District is 5 to 8 miles southwest of Perris, California. It included the Good Hope Mine, Steele's Mine, Santa Rosa (Rosalia) Mine, Virginia or Shay Mine, Santa Fe Mine and many other smaller works like the Little Maggie Mine. It produced a total of about 104,000 ounces of gold through 1959, all from the lodes of various mines. The district declined until the mid-1930s, when attempts were made to rehabilitate the Good Hope and several other mines. These efforts were largely unsuccessful, the Good Hope mine closed when it was flooded with underground water Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidate .... Only three ounces of gold were produced in the district between 1943 and 1959. References Report of the State Mineralogist, California State Mining Bureau, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perris, California
Perris is an old railway city in Riverside County, California, United States, located east-southeast of Los Angeles and north of San Diego. It is known for Lake Perris, an artificial lake, skydiving, and its sunny dry climate. Perris is within the Inland Empire metropolitan area of Southern California. Perris had a population of 78,700 as of the 2020 census. History The coming of the California Southern Railroad led to the founding of the city around the new depot, on the rail connection between the present-day cities of Barstow and San Diego. The Perris Depot is included in the Library of Congress’ Historic American Buildings Survey. Due to a land title dispute at Pinacate, most of its citizens moved two miles north on the railroad and established Perris in 1885. The city is named in honor of Fred T. Perris, chief engineer of the California Southern Railroad.The city of Perris was incorporated in 1911. It originally was within San Diego County but, in 1892, it was tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Good Hope Mine
Good Hope Mine was the principal gold mine in the Pinacate Mining District, Riverside County, California. Good Hope Mine was reputedly begun by a Frenchman named Mache, although the washes in the area were originally placer mined by Mexicans in the 1850s during the California Gold Rush using arrastras. The Good Hope quartz vein was found in 1874. Americans later bought the mine and worked it. The mine was worked to a depth of 575 feet, with several levels 100 feet apart below the 250 foot level. The first levels, at 250 and 350 feet, extended nearly 1,000 feet in length. The 450 foot level did not extend as far. The formation in which the ore occurred is a fine, even-grained granodiorite. At the surface were several veins at distances varying from three to twenty feet. At greater depth, these branching fissures united to form an irregular vein, with a tendency to send off shoots into the surrounding rock, chiefly into the foot-wall side. The foot-wall streak often contained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental ( native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flooded Mine
A flooded mine is one of the direct results of a mine's closure procedure. When a mine stops operating, its maintenance systems also stop, in which the dewatering systems are included. Without these systems the mine will get flooded by water that naturally occurs in rock formations in the ground. Overview Mining operations can occur over a long period of time, from several years to several decades, and in order to keep the mining operations running, water has to be removed from the mine as it accumulates. After the mine is closed, when its operational life ends, the maintenance systems stop, including the dewatering systems. Without dewatering, the mines tend to flood with surface and groundwaters in the lower levels and mined spaces, if there is not a drainage adit present. The flooding process of an open-pit or underground mine can take from a several months period to more than a decade, depending on factors such as volume of open space in the mine, availability of infiltrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Riverside County, California
Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, the population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the United States. The name was derived from the city of Riverside, which is the county seat. Riverside County is included in the Riverside-San Bernardino-Ontario Metropolitan Statistical Area, also known as the Inland Empire. The county is also included in the Los Angeles-Long Beach Combined Statistical Area. Roughly rectangular, Riverside County covers in Southern California, spanning from the greater Los Angeles area to the Arizona border. Geographically, the county is mostly desert in the central and eastern portions, but has a Mediterranean climate in the western portion. Most of Joshua Tree National Park is located in the county. The resort cities of Palm Springs, Palm Desert, Indian Wells, La Quinta, Rancho Mirage, and Desert Hot Spri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inland Empire
The Inland Empire (IE) is a metropolitan area and region inland of and adjacent to coastal Southern California, centering around the cities of San Bernardino and Riverside, and bordering Los Angeles County to the west. It includes the cities of western Riverside County and southwestern San Bernardino County, and is considered to include the desert communities of the Coachella and Victor Valleys, respectively on the other sides of the San Gorgonio Pass and San Bernardino Mountains from the Santa Ana River watershed that forms the bulk of the Inland Empire; a much broader definition includes all of Riverside and San Bernardino counties. The combined land area of the counties of the Inland Empire is larger than ten U.S. states—West Virginia, Maryland, Hawaii, Massachusetts, Vermont, New Hampshire, New Jersey, Connecticut, Delaware and Rhode Island—and slightly smaller than the combined area of the five smallest U.S. states (New Hampshire through Rhode Island). The U.S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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