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Witwatersrand Gold Deposits From

Gold mining in the Witwatersrand Basin has been responsible for the creation of the metropolis of Johannesburg and many thriving mining towns and has had a major influence in the shaping of South

May 26,2019 by: Channing Jonathan

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Witwatersrand Wikipedia

Witwatersrand Mountain Ridge South Africa Britannica

The gold in the Witwatersrand Basin area was deposited in Archean river deltas having been washed down from surrounding goldrich greenstone belts to the north and west Rhenium osmium isotope studies indicate that the gold in those mineral deposits came from unusual 3000 million year old mantle derived intrusions known as komatiite present in the greenstone belts

Here is some history of the Witwatersrand Gold Style Ore Deposits as they related to South Africa since the arrival of the Dutch and the southernmost tip of the continent in 1652

South Africa is famous for its rich deposits of gold the vast majority of which come from the Witwatersrand Basin an underground geological formation believed to have once been the floor of a

Suggests that the uranium in Precambrian conglomerates of the Witwatersrand South Africa is biogenic in origin and was concentrated together with pyrite by microorganisms in an anaerobic environment possibly along a steep coast line in relatively deep waters containing hydrogen sulfide

This points to the existence of sedimentary although subeconomic gold deposits of an age greater than 3 300 million years Biochemically Deposited Gold Layers of carbonaceous matter which often accompany the gold bearing strata on the Witwatersrand have been recognised as fossilized Precambrian plant mats 5

Feb 21 2019 The source of the huge amount of gold in the Witwatersrand is thought to be the entire greenstonedominated Archaean cratonic surface which was subjected to intensive chemical weathering permitting largescale leaching of gold by contemporaneous surface waters

Its rich gold deposits occurring in conglomerate beds known as reefs were discovered in 1886 A heavy inmigration of miners followed and the city of Johannesburg grew

Witwatersrand gold deposits formed by volcanic rain anoxic rivers and Archaean life Christoph A Heinrich 1

Witwatersrand Gold Deposits A special type of gold deposit is the Witwatersrand goldmine in South Africa which is by far the biggest gold field in the world About 40000 tonnes of gold have already been extracted from it The Witwatersrand goldmine is identified as a socalled mixed type of primary and secondary gold deposits

Today the Witwatersrand reef is part of the golden arc an ancient inland lake containing rich deposits of alluvial gold This massive goldfield is 100 kilometers 60 miles long and 36 kilometers 12000 feet deep in certain places It is the source of over 40 of the gold extracted from the Earth

the genesis of quartzpebbleconglomerate gold deposits These various models have resulted from detailed studies of the worlds largest gold province in the Witwatersrand Basin in South Africa which has oftcited genetic models ranging from a modified paleoplacer origin to a hydrothermal origin The majority of workers subscribe to the

The Witwatersrand Gold Rush was a gold rush in 1886 that led to the establishment of Johannesburg and that silt and gold deposits from alluvial gold settled in the area to form the goldrich deposits that South Africa is The discovery of gold on the Witwatersrand also created a super wealthy class of miners and industrialists known as

The largest known gold deposit in the world in Witwatersrand South Africa is one of these Over 15 billion ounces of gold has been mined in Witwatersrand Deposition occurred approximately 3 billion years ago in Witwatersrand and it is estimated that 50

Apr 20 2017 In 1852 the English prospector JH Davis discovered the first gold in the Witwatersrand leading to the South African gold rush and the discovery of much more gold deposits within the basin

The association of gold with carbonaceous rocks is interpreted in terms of the nuclear magnetic physicochemical phenomena It is concluded that the Witwatersrand deposit is a hydrothermal metasomatic deposit

The worlds greatest deposit of gold is hosted by the Archaean Witwatersrand sedimentary basin situated in the central portion of the Kaapvaal Craton of South Africa The geological setting of

On 14 September 1886 the first large mining company on the Reef the Witwatersrand Gold Mining Company was formed with a total nominal capital of 3063000 The first crushing battery consisting of five stamps had been erected on the Reef in 1885 to service the Strubens excavations on the lower West Rand reef but this was a small

Even more important was the discovery of what would prove to be the richest gold fields in the world on the Witwatersrand in the South African Republic later Transvaal in 1886 Unfortunately for British economic and regional interests the gold deposits were located in the center of Afrikaner power in the area only twentyfive miles from the South African Republics capital Pretoria

Apr 25 2017 Scientists predict that the gold deposits in Witwatersrand formed nearly 3 billion years ago when elemental gold formed compounds with sulfur that were washed down as acidic rain The Archean microbes then triggered the precipitation of gold from the acidic waters leading to the formation of vast deposits of this precious metal

Gold mining in the Witwatersrand Basin has been responsible for the creation of the metropolis of Johannesburg and many thriving mining towns and has had a major influence in the shaping of South

Sep 13 2017 The total amount of gold extracted from Vredefort sites is estimated at no more than some 130 kg a trivial amount in comparison to the gold production from the entire Witwatersrand Basin In conclusion the Vredefort impact event at 202 Ga secured one of the worlds largest ore deposits namely the Witwatersrand gold and uranium province

The Witwatersrand gold fields of South Africa account for more than a third of the worlds total gold production since mining started there in 1886 48000 t Au These gold fields dominated production throughout the twentieth century but production peaked at

Witwatersrand Wikipedia

Witwatersrand Gold Deposits

The gold in the Witwatersrand Basin area was deposited in Archean river deltas having been washed down from surrounding goldrich greenstone belts to the north and west Rhenium osmium isotope studies indicate that the gold in those mineral deposits came from unusual 3000 million year old mantle derived intrusions known as komatiite present in the greenstone beltsHere is some history of the Witwatersrand Gold Style Ore Deposits as they related to South Africa since the arrival of the Dutch and the southernmost tip of the continent in 1652South Africa is famous for its rich deposits of gold the vast majority of which come from the Witwatersrand Basin an underground geological formation believed to have once been the floor of aSuggests that the uranium in Precambrian conglomerates of the Witwatersrand South Africa is biogenic in origin and was concentrated together with pyrite by microorganisms in an anaerobic environment possibly along a steep coast line in relatively deep waters containing hydrogen sulfide

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