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Gold Mining In Colorado
Gold mining in Colorado, a state of the United States, has been an industry since 1858. It also played a key role in the establishment of the state of Colorado. Explorer Zebulon Pike heard a report of gold in South Park, present-day Park County, Colorado, in 1807.A. H. Koschman and M. H. Bergendahl (1968) ''Principal gold-Producing Districts of the United States'', US Geological Survey, Professional Paper 610, p.143. Gold discoveries in Colorado began around Denver; prospectors traced the placer gold to its source in the mountains west of Denver, then followed the Colorado Mineral Belt in a southwest direction across the state to its terminus in the San Juan Mountains. The Cripple Creek district, far from the mineral belt, was one of the last gold districts to be discovered and is still in production. Denver-area placers On June 22, 1850, a wagon train bound for California crossed the South Platte River just north of the confluence with Clear Creek and followed Clear Creek w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cripple Creek, Colorado
Cripple Creek is a statutory city that is the county seat of Teller County, Colorado, United States. The city population was 1,155 at the 2020 United States Census. Cripple Creek is a former gold mining camp located southwest of Colorado Springs near the base of Pikes Peak. The Cripple Creek Historic District, which received National Historic Landmark status in 1961, includes part or all of the city and the surrounding area. The city is now a part of the Colorado Springs, CO Metropolitan Statistical Area and the Front Range Urban Corridor. History For many years, Cripple Creek's high valley, at an elevation of , was considered no more important than a cattle pasture. Many prospectors avoided the area after the ''Mount Pisgah hoax'', a mini gold rush caused by salting (adding gold to worthless rock). On 20 October, 1890, Robert Miller "Bob" Womack discovered a rich ore and the last great Colorado gold rush began. By July 1891, a post office was established. By November, h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado Mineral Belt
The Colorado Mineral Belt (CMB) is an area of ore deposits from the La Plata Mountains in Southwestern Colorado to near the middle of the state at Boulder, Colorado and from which over 25 million troy ounces (778 t) of gold were extracted beginning in 1858. The belt is a "northeast-striking zone defined by: a Proterozoic shear zone system (McCoy, 2001); a suite of Laramide-aged plutons and related ore deposits ( Tweto and Sims, 1963); a major gravity low (Isaacson and Smithson, 1976); low- crustal velocities; and high heat flow (Decker et al., 1988)." Mining districts includ *Central City-Idaho Springs district *Leadville mining district, named for Leadville, Colorado * Sneffels-Red Mountain-Telluride district The belt lies within a zone that has been geologically active at intervals beginning from near the time of crustal accretion in central Colorado at least 1.6 billion years ago until the present. Parts of the CMB follow shear zones of Precambrian age and the Paleozoic an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arapahoe County, Colorado
Arapahoe County ( ) is a county located in the U.S. state of Colorado. As of the 2020 United States Census, 2020 census, its population was 655,070, making it the third-most populous county in Colorado. The county seat is Littleton, Colorado, Littleton, and the most populous city is Aurora, Colorado, Aurora. The county was named for the Arapaho Native Americans in the United States, Native American tribe, who once lived in the region. Arapahoe County is part of the Denver-Aurora-Lakewood, Colorado, Lakewood Denver-Aurora-Lakewood, CO Metropolitan Statistical Area, metropolitan statistical area. Arapahoe County calls itself "Colorado's First County", since its origins antedate the Pike's Peak Gold Rush. History On August 25, 1855, the Kansas Legislature, Kansas Territorial Legislature created a huge Arapahoe County, Kansas Territory, Arapahoe County to govern the entire western portion of the Territory of Kansas. The county was named for the Arapaho Nation, who lived in the regio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adams County, Colorado
Adams County is a county located in the U.S. state of Colorado. As of the 2020 United States Census, 2020 census, the population was 519,572. The county seat is Brighton, Colorado, Brighton. The county is named for Alva Adams (governor), Alva Adams, an early Governor of Colorado, Governor of the State of Colorado in 1887–1889. Adams County is part of the Denver–Aurora, Colorado, Aurora–Lakewood, Colorado, Lakewood, CO Denver metropolitan area, Metropolitan Statistical Area. History On May 30, 1854, the Kansas–Nebraska Act created the Territory of Nebraska and Territory of Kansas, divided by the 40th parallel north, Parallel 40° North (Baseline Road (Colorado), 168th Avenue in present-day Adams County). The future Adams County, Colorado, occupied a strip of northern Arapahoe County, Kansas Territory, immediately south of the Nebraska Territory. In 1859, John D. Henderson, John D. "Colonel Jack" Henderson built a ranch, trading post, and hotel on Henderson Island in the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Construction Aggregate
Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world. Aggregates are a component of composite materials such as concrete and asphalt; the aggregate serves as reinforcement to add strength to the overall composite material. Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage applications such as foundation and French drains, septic drain fields, retaining wall drains, and roadside edge drains. Aggregates are also used as base material under foundations, roads, and railroads. In other words, aggregates are used as a stable foundation or road/rail base with predictable, uniform properties (e.g. to help prevent differential settling under the road or building), or as a low-cost exten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cherry Creek (Colorado)
Cherry Creek is a tributary of the South Platte River, long, in Colorado in the United States. Course Cherry Creek rises in the high plateau, east of the Front Range, in northwestern El Paso County. It flows north, through Castlewood Canyon State Park where it is spanned by the historic Cherry Creek Bridge, past Parker and through portions of Centennial and Aurora, and into southeast Denver. It flows northwest through Denver, becoming an urban stream and joining the South Platte River at Confluence Park in central Denver just west of downtown and approximately east of the foothills, near the site where the city of Denver was founded in 1858. The Cherry Creek Dam, completed in 1950, forms Cherry Creek Reservoir in Cherry Creek State Park, providing flood control and irrigation. The dam lies immediately southeast and southwest of the Denver and Aurora city limits, respectively, approximately from the creek's confluence with the South Platte. The creek lends its name t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pike's Peak Gold Rush
The Pike's Peak Gold Rush (later known as the Colorado Gold Rush) was the boom in gold prospecting and mining in the Pike's Peak Country of western Kansas Territory and southwestern Nebraska Territory of the United States that began in July 1858 and lasted until roughly the creation of the Colorado Territory on February 28, 1861. An estimated 100,000 gold seekers took part in one of the greatest gold rushes in North American history. The participants in the gold rush were known as " Fifty-Niners" after 1859, the peak year of the rush and often used the motto Pike's Peak or Bust! In fact, the location of the Pike's Peak Gold Rush was centered north of Pike's Peak. The name Pike's Peak Gold Rush was used mainly because of how well known and important Pike's Peak was at the time. Overview The Pike's Peak Gold Rush, which followed the California Gold Rush by approximately one decade, produced a dramatic but temporary influx of migrants and immigrants into the Pike's Peak Country o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denver, Colorado
Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the United States and the fifth most populous state capital. It is the principal city of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area and the first city of the Front Range Urban Corridor. Denver is located in the Western United States, in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains. Its downtown district is immediately east of the confluence of Cherry Creek and the South Platte River, approximately east of the foothills of the Rocky Mountains. It is named after James W. Denver, a governor of the Kansas Territory. It is nicknamed the ''Mile High City'' because its official elevation is exactly one mile () above sea level. The 105th meridian we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arvada, Colorado
Arvada () is a home rule municipality located in Jefferson and Adams counties, Colorado, United States. The city population was 124,402 at the 2020 United States Census, with 121,510 residing in Jefferson County and 2,892 residing in Adams County. Arvada is the seventh most populous city in Colorado. The city is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area and the Front Range Urban Corridor. The Olde Town Arvada historic district is 7 miles (11 km) northwest of the Colorado State Capitol in Denver. History The first documented discovery of gold in the Rocky Mountain region occurred on June 22, 1850, when Lewis Ralston, a Georgia prospector headed for the California gold fields, dipped his sluice pan into a small stream near its mouth at Clear Creek. Ralston found about 1/4 ounce (6 g) of gold, then worth about five dollars. Ralston's companions named the stream Ralston's Creek in his honor, but they all left the next morning, drawn by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auraria, Denver
Auraria was a small mining settlement in the Kansas Territory in the United States. Today it survives in its original location as a neighborhood of Denver, Colorado, south of the confluence of Cherry Creek and the South Platte River. Geography Auraria is located in central Denver. It is just west of downtown Denver and is shaped roughly like a triangle. It borders Colfax Avenue on the south, Cherry Creek to the northeast, and South Platte River to the northwest. History On October 3, 1858, a group of Georgia prospectors led by Green Russell establish the townsite of Auraria south of Cherry Creek near the Cherry Creek Diggings, over a month before a group of Kansas Territory speculators led by William Larimer established the rival Denver City on the other side of Cherry Creek. Henry Allen, a surveyor, laid the town platte and was Auraria town company's first president. The town was named for the gold mining settlement of Auraria, Georgia. On October 29, Charles H. Blak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Russell
William Greeneberry "Green" Russell (1818–1877) was an American prospector and miner. Early life Green Russell was born in South Carolina but moved with his family to Georgia as a small child. His father James Russell engaged in gold mining during the Georgia Gold Rush that started in 1828 and Green came of age in a local economy dominated by mining. In 1845 he married Susan Willis who was 1/8th Cherokee. Mining in California When gold was found at Sutter's Mill in 1848, a cook for Sutter's crew who was a Georgia native sent word back home enabling Russell to learn of the discovery. Russell led a couple of successful mining ventures to California which included his brothers and other Georgians including Cherokees, some of whom made the trek west overland through the Rockies. Colorado Gold Russell had spent his boyhood in the Cherokee country near Dahlonega, site of the only significant gold rush east of the Mississippi, in what would become Dawson County, along the Etowah Rive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clear Creek (Colorado)
Clear Creek is a tributary of the South Platte River, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 25, 2011 in north central Colorado in the United States. The creek flows through Clear Creek Canyon in the Rocky Mountains directly west of Denver, descending through a long gorge to emerge at the town of Golden, finally ending in the Colorado Eastern Plains where it joins the South Platte. Clear Creek is unusual in that it is a stream named "creek" fed by a stream named "river"; typically "rivers" are fed by "creeks", and are larger bodies of water, although the nomenclature is ambiguous and there is no clear system. Fall River empties into Clear Creek along I-70 west of Idaho Springs, Colorado. Colorado gold rush The creek is famous as the location of the most intense early mining activity during the Colorado Gold Rush of 1859. Mountain man Jim Baker had a cabin on the creek from 1873 until his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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