The Formation of Gold deposits in South Africa

In 1852, the English prospector J.H. 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. Although the Witwatersrand has been subject for decades of research, the genesis of gold …

Quartz-Pebble-Conglomerate Gold Deposits

the genesis of quartz-pebble-conglomerate gold deposits. These various models have resulted from detailed studies of the world's largest gold province, in the Witwatersrand Basin in South Africa, which has oft-cited genetic models ranging from a modified paleoplacer origin to a hydro-thermal origin. The majority of workers subscribe to the

Anomalous Gold in Witwatersrand Shales

shales. Gold mining is currently confined to narrow conglomerate reefs and carbon seams in the Upper Witwatersrand succession (i.e., the Central Rand Group commencing above the Jeppestown shale). The inset plan of the Blyvooruitzicht gold mine emphasizes the planar nature of Witwatersrand gold de-

"Wits 2.0" and Palaeoplacer Gold Deposits – Caracle Creek ...

Information Circular No. 375 (2003): The debate on the origin of the Witwatersrand Gold (1896-1903). Phillips (1987): Anomalous Gold in Witwatersrand Shales. Piercey (2013): Sedimentary origin of gold and uranium in the Archean Witwatersrand Supergroup, South Africa. CANADA (The Huronian): Inventus Mining Corp.: The Pardo Paleoplacer Gold ...

Gold - Minerals Council South Africa

The Witwatersrand gold-producing area in South Africa is underlain by an underground geological formation also known as the Witwatersrand Basin. It lies on the Kaapvaal Craton, and is one of the world's largest gold placer deposits.

Witwatersrand Gold Rush | The Famous South African Gold Mine

A brief overview of the history and development of Witwatersrand, the famous gold mine of South Africa. With photos, facts, and figures about its impact on the growth of the region, the history of precious metals in the area, and the people that have mined the gold from the ground, even up to today.

Witwatersrand | mountain ridge, South Africa | Britannica

The 200-by-350-km (124-by-217-mile) Witwatersrand Basin contains an 11-km- (7-mile-) thick sequence of lavas and sediments that are 3 billion years old. The basin is famous for its very large deposits of gold and uranium that occur as detrital minerals in conglomerates. These minerals were derived by erosion of…

The Witwatersrand deposit and the problem of the ore ...

The problem of the origin of the Witwatersrand gold-uranium deposit is considered. The fluvial and explosion hydrothermal origin of pyrite spheroids and Au-bearing pseudoconglomerate is denied. Evidence for the primary character of spheroids and the autochthonous crystallization of pyrite under endogenic conditions is furnished. The association of gold with carbonaceous rocks is interpreted in ...

The Witwatersrand Basin and Its Gold Deposits: Methods and ...

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 ...

The morphology and silver content of gold from the Upper ...

The changes in fineness of the Witwatersrand gold can be attributed to changes in the silver content of the primary gold deposit which was situated most likely in Archean greenstone-granite areas surrounding the Witwatersrand Basin.It was found that gold in economically important stratigraphic units of the Klerksdorp gold field contains ...

Scientists Discover That 40 Percent Of The World's Gold Is ...

Scientists have for the first time directly dated gold from South Africa's Witwatersrand gold deposits, source of more than 40 percent of all gold so far mined on Earth.

Gold Deposits | Gold.info

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 40,000 tonnes of gold have already been extracted from it. The Witwatersrand goldmine is identified as a so-called mixed type of primary and secondary gold deposits.

What And Where Is Witwatersrand? - WorldAtlas.com

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.

The Witwatersrand Basin and Its Gold Deposits | SpringerLink

Feb 21, 2019· Frimmel H.E. (2019) The Witwatersrand Basin and Its Gold Deposits. In: Kröner A., Hofmann A. (eds) The Archaean Geology of the Kaapvaal …

The impact of gold mining on the Witwatersrand on the ...

William Knight registered the first mining company on the Witwatersrand, the Witwatersrand Gold Mining Company, in September 1886. Goch founded the George Goch Gold Mining Company in 1886 and the Wemmer Gold Mining Company in 1887. Rudd and Rhodes floated the company Gold Fields of South Africa Limited on 9 February 1887.

A paper on the origins of the original Witwatersrand Gold ...

Mar 01, 2018· These lavas were found in many places while gold-mining. Surface occurrences. On the surface, a huge tidal-wave or Tsunami screamed northwards, taking the tops of the volcanic vents, or pipes, with it. This piled up along a roughly East-West line to form the Witwatersrand Ridge, about 120 kilometres from impact.

Witwatersrand - Wikipedia

Largest Gold Deposits in the World - Witwatersrand Gold Fields

The formation of gold deposits in South Africa

Apr 20, 2017· In 1852, the English prospector J.H. 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.

Witwatersrand gold-pyrite-uraninite deposits do not ...

Jonathan Law, Neil Phillips, 2006. "Witwatersrand gold-pyrite-uraninite deposits do not support a reducing Archean atmosphere", Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere - Constraints from Ore Deposits, Stephen E. Kesler, Hiroshi Ohmoto

Witwatersrand Basin – Hartbeespoort, South Africa - Atlas ...

In 1886, after years of rumors, legends, and smaller discoveries, it was definitively established that there was a huge, rich deposit of gold under the Witwatersrand, a rocky ridge in South Africa.

Relation to Archean Witwatersrand Gold and Uranium Ore ...

Feb 12, 2020· 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 2.02 Ga secured one of the world's largest ore deposits, namely the Witwatersrand gold and uranium province.

A Review of the W itwatersrand Basin - The W orld's ...

The world's 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 this remarkable clastic sedimentar y deposit, which has yielded mor e than one third of all the gold ever produced on the planet, is discussed.

Witwatersrand Gold Fields: Geology, Genesis, and ...

The Witwatersrand gold fields of South Africa account for more than a third of the world's total gold production since mining started there in 1886: 48,000 t Au. These gold fields dominated production throughout the twentieth century, but production peaked at …

Geology of Gold Mineralization & How Gold Deposits are Formed

Gold is relatively scarce in the earth, but it occurs in many different kinds of rocks and in many different geological environments. Though scarce, gold is concentrated by geologic processes to form commercial deposits of two principal types: lode (primary) deposits and placer (secondary) deposits.

Witwatersrand gold deposits (pdf) | Paperity

Although gold overgrowths on pyrite are rarely well crystallized, sufficient particles have been observed to indicate that the cube faces of the gold crystals grow on the cube faces of the pyrite rotated by 45 Genesis of the Witwatersrand Gold Deposits Although at one time the subject of controversy, the fossil placer nature of the ...

Witwatersrand gold deposits formed by volcanic rain ...

The Witwatersrand gold deposit is the largest in the world. Thermodynamic calculations show that such rich accumulations of gold could be linked to abundant volcanism, primitive life and the ...

Witwatersrand Gold Rush - Wikipedia

Jul 07, 2017· #188 8 pair of Levis and other rare jeans from the 1800s found buried in an abandoned mine! - Duration: 22:46. Exploring Abandoned Mines Recommended for you

Largest Gold Deposits in the World – Witwatersrand Gold ...

The Witwatersrand deposits have produced almost 40% of all the gold produced on earth since beginning of time over 1.5 billion with a B ounces that's the equivalent of 305 million ounce deposits if there's one area of agreement on the Witwatersrand gold deposits is that they are truly world class solid gold elephants.