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Granite and granite pegmatite (2545 ± 30 Ma) intrude metasedimentary rock of the Miners Delight Formation in the western part of the greenstone belt. The South Pass pluton is a pegmatitic granite west of South Pass City, and the Sweetwater granite is a fine-to medium-grained leucocratic granite that occurs to the west of the South Pass pluton along the Sweetwater River and Lander Creek.
Granite is located midway between Leadville to the north, and Buena Vista to the south. The Arkansas River, which once saw extensive placer mining during the Colorado Gold Rush, runs through Granite. It is the sixth longest river in the US; the headwater is 17 miles north in the Leadville area.
The Timbarra Gold Mine was a highly controversial gold mine located on the Timbarra Plateau, at the head waters of the Clarence River, near Tenterfield, New South Wales, Australia. The gold ore body consisted of a greisen type granite .
Placer gold deposits form via gravity, with the density of gold causing it to sink into trap sites within the river bed, or where water velocity drops, such as bends in rivers and behind boulders. Often placer deposits are found within sedimentary rocks and can be billions of years old, for instance the Witwatersrand deposits in South Africa .
Granite Creek is a creek and townsite in British Columbia located in the Similkameen region. Granite Creek flows north into the Tulameen River and joins that river approximately one and a half miles to the east of Coalmont, British Columbia. [1] It is assumed Granite Creek yielded more than $500,000 in placer gold since its discovery.
The maximum clast size decreases as the clasts are transported further due to attrition, so conglomerates are more characteristic of immature river systems. In the sediments deposited by mature rivers, conglomerates are generally confined to the basal part of a channel fill where they are known as pebble lags . [ 11 ]
The major primary gold lodes are found in the shear zone between the Lower Birimian phyllites and Upper Birimian greenstones, and consist of quartz veins and lenticular reefs. The gold is usually accompanied with arsenopyrite. Mines along the west side of the Tarkwa syncline include the Obuasi Gold Mine, and those located at Prestea and Konongo.
The Island is located at Thompson Bend on the Yarra River at Warrandyte, Victoria, Australia, approximately 24 kilometres (15 mi) north-east of Melbourne. It was created by gold miners in 1859–60, during the Victorian gold rush. They dug a diversion channel to alter the course of the Yarra River, providing access to the alluvial gold in the ...