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Rail Road Flat, California
Rail Road Flat (formerly Independence Flat and Railroad Flat) is a census-designated place (CDP) in Calaveras County, California, United States. The population was 316 at the 2020 census. History This historic mining town, elevation 2,600 feet (788 m), was named after primitive mule-drawn ore cars used here. There was never actually a railroad here. The town was established in 1849. It was the site of an Indian council as well as the center of rich placer and quartz mining. Its largest producer was the Petticoat Mine. The post office was established in 1857, closed in 1858, and re-established in 1869 and the Edwin Taylor store built in 1867. The town's population was decimated in 1880 by black fever. The Clark Reservoir was created when an engineer named W.V. Clark constructed a ditch from the Mokelumne River, as there was not much water to work the placers. The reservoir, located on his property, supplied water to the mines and to the town. The town is registered as California ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unincorporated Community
An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as the military). There are many unincorporated communities and areas in the United States and Canada, but many countries do not use the concept of an unincorporated area. By country Argentina In Argentina, the provinces of Chubut Province, Chubut, Córdoba Province (Argentina), Córdoba, Entre Ríos Province, Entre Ríos, Formosa Province, Formosa, Neuquén Province, Neuquén, Río Negro Province, Río Negro, San Luis Province, San Luis, Santa Cruz Province, Argentina, Santa Cruz, Santiago del Estero Province, Santiago del Estero, Tierra del Fuego Province, Argentina, Tierra del Fuego, and Tucumán Province, Tucumán have areas that are outside any municipality or commune. Australia Unlike many other countries, Australia has only local go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of Silicon dioxide, SiO2. Quartz is, therefore, classified structurally as a Silicate mineral#Tectosilicates, framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Islander Americans
Pacific Islander Americans (also colloquially referred to as Islander Americans) are Americans who are of Pacific Islander ancestry (or are descendants of the Indigenous peoples of Oceania). For its purposes, the United States census also counts Aboriginal Australians as part of this group. Pacific Islander Americans make up 0.5% of the US population including those with partial Pacific Islander ancestry, enumerating about 1.4 million people. The largest ethnic subgroups of Pacific Islander Americans are Native Hawaiians, Samoan Americans, Samoans, and Chamorro people, Chamorros. Much of the Pacific Islander population resides in Hawaii, Alaska, California, Utah, and Texas. Pacific Islanders may be considered Oceanian Americans, but this group may include Australians and New Zealander-origin people, who can be of non-Pacific Islander ethnicity. Many Pacific Islander Americans are mixed with other races, especially Europeans and Asians, due to Pacific Islanders being a small p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asian Americans
Asian Americans are Americans with Asian diaspora, ancestry from the continent of Asia (including naturalized Americans who are Immigration to the United States, immigrants from specific regions in Asia and descendants of those immigrants). Although this term had historically been used for all the indigenous peoples of the continent of Asia, the usage of the term "Asian" by the United States Census Bureau denotes a racial category that includes people with origins or ancestry from East Asia, South Asia, Southeast Asia, and Central Asia. It excludes people with ethnic origins from West Asia, who were historically classified as 'white' and will be categorized as Middle Eastern Americans starting from the 2030 United States census, 2030 census. Central Asians in the United States, Central Asian ancestries (including Afghans, Afghan, Kazakhs, Kazakh, Kyrgyz people, Kyrgyz, Tajiks, Tajik, Turkmens, Turkmen, and Uzbeks, Uzbek) were previously not included in any racial category but h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Americans In The United States
Native Americans (also called American Indians, First Americans, or Indigenous Americans) are the Indigenous peoples of the Americas, Indigenous peoples of the United States, particularly of the Contiguous United States, lower 48 states and Alaska. They may also include any Americans whose origins lie in any of the indigenous peoples of North or South America. The United States Census Bureau publishes data about "American Indians and Alaska Natives", whom it defines as anyone "having origins in any of the original peoples of North and South America ... and who maintains tribal affiliation or community attachment". The census does not, however, enumerate "Native Americans" as such, noting that the latter term can encompass a broader set of groups, e.g. Native Hawaiians, which it tabulates separately. The European colonization of the Americas from 1492 resulted in a Population history of Indigenous peoples of the Americas, precipitous decline in the size of the Native American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Americans
African Americans, also known as Black Americans and formerly also called Afro-Americans, are an American racial and ethnic group that consists of Americans who have total or partial ancestry from any of the Black racial groups of Africa. African Americans constitute the second largest ethno-racial group in the U.S. after White Americans. The term "African American" generally denotes descendants of Africans enslaved in the United States. In 2023, an estimated 48.3 million people self-identified as Black, making up 14.4% of the country’s population. This marks a 33% increase since 2000, when there were 36.2 million Black people living in the U.S. African-American history began in the 16th century, with Africans being sold to European slave traders and transported across the Atlantic to the Western Hemisphere. They were sold as slaves to European colonists and put to work on plantations, particularly in the southern colonies. A few were able to achieve freedom th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Americans
White Americans (sometimes also called Caucasian Americans) are Americans who identify as white people. In a more official sense, the United States Census Bureau, which collects demographic data on Americans, defines "white" as "[a] person having origins in any of the original peoples of Europe, the Middle East, or North Africa". This group constitutes the majority of the people in the United States, although their proportion of the overall population has been White demographic decline, gradually declining. As of the latest American Community Survey in 2023, the US Census Bureau estimates that 60.5% of the US population, or 202,651,650 people, are White alone, while Non-Hispanic whites, Non-Hispanic Whites make up 57.1% of the population. Overall, 72.3% of Americans identify as White alone or in combination. European Americans are by far the largest panethnic group of white Americans and have constituted the majority population of the United States since the nation's founding. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Census Designated Place
A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such as self-governing city (United States), cities, town (United States), towns, and village (United States), villages, for the purposes of gathering and correlating statistical data. CDPs are populated areas that generally include one officially designated but currently unincorporated area, unincorporated community, for which the CDP is named, plus surrounding inhabited countryside of varying dimensions and, occasionally, other, smaller unincorporated communities as well. CDPs include small rural communities, Edge city, edge cities, colonia (United States), colonias located along the Mexico–United States border, and unincorporated resort and retirement community, retirement communities and their environs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Census Bureau
The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, economy. The U.S. Census Bureau is part of the United States Department of Commerce, U.S. Department of Commerce and its Director of the United States Census Bureau, director is appointed by the president of the United States. Currently, Ron S. Jarmin is the acting director of the U.S. Census Bureau. The Census Bureau's primary mission is conducting the United States census, U.S. census every ten years, which allocates the seats of the United States House of Representatives, U.S. House of Representatives to the U.S. state, states based on their population. The bureau's various censuses and surveys help allocate over $675 billion in federal funds every year and it assists states, local communities, and businesses in making informed decisions. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Historical Landmark
A California Historical Landmark (CHL) is a building, structure, site, or place in the U.S. state of California that has been determined to have statewide historical landmark significance. Criteria Historical significance is determined by meeting at least one of these criteria: # The first, last, only, or most significant of its type in the state or within a large geographic region (Northern California, Northern, Central California, Central, or Southern California); # Associated with an individual or group having a profound influence on the history of California; or # An outstanding example of a period, style, architectural movement or construction; or is the best surviving work in a region of a pioneer architect, designer, or master builder. Other designations California Historical Landmarks numbered 770 and higher are automatically listed in the California Register of Historical Resources. A site, building, feature, or event that is of local (city or county) significance may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mokelumne River
The Mokelumne River ( or ; ''Mokelumne'', Miwok for "People of the Fish Net") is a -long river in northern California in the United States. The river flows west from a rugged portion of the central Sierra Nevada (U.S.), Sierra Nevada into the Central Valley (California), Central Valley and ultimately the Sacramento–San Joaquin River Delta, where it empties into the San Joaquin River-Stockton Deepwater Shipping Channel. Together with its main tributary, the Cosumnes River, the Mokelumne drains in parts of five California counties. Measured to its farthest source at the head of the North Fork, the river stretches for . The river is colloquially divided into the Upper Mokelumne River, which stretches from the headwaters to Pardee Reservoir in the Sierra foothills, and the Lower Mokelumne River, which refers to the portion of the river below Camanche Dam. In its lower course, the Mokelumne is used heavily for irrigation and also provides water for the east San Francisco Bay Area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
