Mine Details
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Alaska Placer Gold Mine – Active and Ready to Go Gold, Turnkey, Partial Trade, Equipment, Permits, Camp, Active & Ready to Go The area is rich in gold mining history, beginning in 1910. Anvil Creek claims consist of … |
Featured Gold Alaska, USA |
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Enviro-Gold2 Placer mine Forty three claims with 2-mile lease .Multiple contact zones, proven .Fine gold, mostly 12 … |
Featured Gold Canada, Yukon |
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Melba Creek Gold Mine Proven Placer Claims Priced to Sell Located in Yukon, Canada. Proven Placer claim priced to sell. 2.21 Miles square is the siz … |
Featured Gold Canada, Yukon |
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102 Yukon Gold Placer Claims – Indian River & Quartz Creek 102 High Quality Yukon Gold Placer Claims for Sale with Proven Gold |
Featured Gold Canada, Yukon |
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Prime Bluestone Quarry Portfolio TWO TRACTS TOTALING 884± ACRES THROUGHOUT PENNSYLVANIA (SUSQUEHANNA & DAUPHIN COUNTIES) Located in the heart of Pennsylvania’s productive bluestone region |
Featured |
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Emerald Mining Property in Brazil Rich in Reserves and quality The emerald mine held by the company is rich in reserves and the product quality is very g … |
Featured Emerald Brazil |
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Fantastic Placer Mining Opportunity Complete First-class Turnkey Operation, producing claims and virgin ground Ready-to-go immediately. Ability to produce 1,000 ounces Au in first year on existing Domi … |
Featured Gold Canada, Yukon |
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Union Bar Placer Leases Fraser River Gold 356 Gold Mine Acres for Sale, Easy Access, great potential, warm climate, mined 8 troy oz … |
Featured Gold British Columbia, Canada |
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Lower Grandview Mine 20 Acre Oregon Mining Claim For Sale The potential output of the Grandview mine is truly astounding. 20 Lode Mining and One Mil … |
Featured Gold Oregon, USA |
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Sixtymile River Claims Alluvial Gold Placer Claims For Sale - Yukon-Canada 650 Claims Available. Area has been actively mined for 120 years. Remaining claims have ha … |
Featured Gold Canada, Yukon |
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The Scribner Creek Dawson City 6 Gold Claims For Sale on Scribner Creek Scribner creek has easy access, proven gold, and is well suited for mining. There are 6 cl … |
Featured Gold Canada, Yukon |
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Boundary Red Mountain Mine Patented Gold Mine For Sale - USA Previously Producing Patented Gold Mine for Sale in the USA. $1.6 Billion Estimated & Infe … |
Featured Gold, Silver USA, Washington |
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Enviro-Gold Placer mine for Sale, Joint Venture, or lease. Mine is located 11 kilometers from newly developed Victoria Golds hard rock mine.The creek … |
Featured Gold Canada, Yukon |
Documented large nugget producing underground placer mine. Significant reserve potential. 1120 acres of contiguous claims. Plan of operations approved for exploratory drilling to be done in the fall of this year. Terms flexible. For complete details go to our
website www.unionkeystonemine.com
California USA, 100 miles north of Sacramento and 90 miles west of Reno Nevada. The mine has good access by way of surface roads.
The Union Keystone mine is an underground placer mine located in the mother lode region near La Porte California. The mine consists of 1120 acres of contiguous unpatented placer claims in the Gibsonville mining district. The average elevation is 5500 feet. The claims overlie more than 2 miles of unmined tertiary gravel channels known as the Bellevue Channel, Bellevue Back Channel, or Blue Lead Channel. The historic Union Drift Tunnel, the Melones Fault, and a World War 1 chrome tunnel are located on the property. Very large 90 to 100 ounce nuggets and consistent gold made this one of the richest paying mines in the region in the late 1800s.
Gold-bearing Tertiary gravels of the mother lode region of northern California were deposited on metamorphic bedrock of meta-sediments and meta-igneous rocks. These comprise phyllite, schist, slate and greenstone intruded locally by peridotite, hornblendite, granodiorite and other intrusive rocks.
Gold mineralization occurred during the Jurassic Period, probably during the final stages of the intrusion of the Sierra Nevada batholith. Gold- quartz-carbonate mineralization in the California Mother Lode occurred as early as 152 m.y. ago and continued until at least 122 m.y. The Malones fault system was a major plumbing conduit and hydrothermal system that concentrated quartz and gold, providing rich sources for erosion of gold into the gravel channels. Gold occurs in quartz veins and mineralized country rock where veins are as much as 50 feet wide and several thousand feet long. Gold occurs in the free state and the area is famous for the large size of nuggets in the veins.
The tertiary channels run roughly parallel east-west while the northerly trending Malones Fault and it's splays, the main structures along which many of the gold rich deposits of the Mother Lode are found, cut across the channels. Gravels downstream of the faults created rich placer zones on the Union claims that produced nuggets of up to 100 ounces and heavy pay as proved by the Union and adjoining mines. Contact Seller for a full report.
In 1856 the Union mine was organized with 10 share holders. By 1864 the mine was in production with good prospects. In 1867 it was reported that the Union Mine had one of the finest tunnels and best conducted claims in the Sierra. The Union mine continued to be one of the best paying mines in the region producing large nuggets and consistent gold. Operations at the Union were terminated in 1898 when the surface buildings were destroyed by fire and water drainage into the workings became unmanageable. In 1936 and 1937, an attempt was made by T.C. Brown of San Francisco to reopen the drift tunnel.