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Feb 21, 2019· Last but not least, the Witwatersrand Basin hosts in its centre the world''s largest and oldest known impact structure, now evident in the form of the 2023 ± 2 Ma (Kamo et al. 1996) Vredefort Dome (Fig. ).Although the exceptional metal endowment of the Witwatersrand strata cannot be related to this impact because it predates this catastrophic event by some 800–900 million years, the ...
Michael Quinert Chairman. Mr Quinert is a founding partner of Quinert Rodda Associates which was established in July 2009. He has over 30years'' experience as a commercial and corporate lawyer, including three years with ASX and over 20 years as a partner in a Melbourne law firms.
THIS Gold in 2000volume is organized around a classification of hypogene gold deposits that emphasizes their tectonic setting and relative time of formation compared to their host rocks and other gold deposit types (, Sawkins, 1972, 1990; Groves et al., 1998; Kerrich et al., 2000).The temporal division of orogenic gold deposits into Archean, Proterozoic, and Phanerozoic follows closely the ...
taken place across the Witwatersrand Basin despite more than 100 years of mining of gold. However, it is generally agreed that the Witwatersrand Basin underwent inversion tectonics during and after deposition of the quartzite and conglomerate units (some auriferous) of the Central Rand Group, from extension to compression positive
The Klerksdorp gold field is 35 km long and 20 km wide but the Klerksdorp gold field is only a part of the Witwatersrand gold system and if we were to superimpose the gold field on a geology map of the entire Klerksdorp we can see that it''s just one of several gold fields marked in blue along the rim of the Witwatersrand basin.
Native gold (Au) occurs in this rock as colloform bands, partially replaces breccia clasts, and is also disseminated in the matrix. Published research indicates that Sleeper Mine rocks represent an ancient epithermal gold deposit (hot springs gold deposit), formed by volcanism during Basin Range extensional tectonics.
H Vance White is President/CEO at Noble Mineral Exploration Inc. See H Vance White''s compensation, career history, education, memberships.
Jul 07, 2017· Cold Gold Winter California Gold Prospecting Documentary Duration: 28:46. California Mother Lode Prospectors 124,456 views. 28:46. Rock and Mineral Identification Duration: 19:17.
The basin is 2629M to 2775M years old and the basal part, at least, is thought by some to be analogous to the Witwatersrand Basin ("Wits") in South Africa. The Wits has produced ~ billion ounces of gold, approaching half of all gold ever produced worldwide. There is no consensus on the genesis of Wits gold.
Apr 20, 2017· In 1852, the English prospector 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 basin holds the richest reserve of gold ever discovered the world. Over 2 billion ounces of gold have been mined from its goldfields since their discovery in the late 19th century. It''s ...
It is now evident the Vredefort impact event played a larger role in the genesis of Witwatersrand Basin gold fi elds (Frimmel and Minter, 2002 ; Frimmel et al ., 2005 ; Hayward et al ., 2005 ...
MINNEAPOLIS(BUSINESS WIRE)Wits Basin Precious Minerals Inc. (OTCBB: WITM) is pleased to provide this update on the BatesHunter Mine project located in the Central City Mining District in Program. The Company is conducting a surface exploration Diamond drill program designed to intersect potential highgrade gold ore bodies in the Central City Gold District.
Mar 01, 2015· Today, there is a quite different geological understanding of the Witwatersrand Basin. A new geological framework was presented at Reno in the Gold 2000 Conference (Phillips and Law, 2000) that drew on prior work including Pretorius, and also subsequent work by many universities and geological framework of the Witwatersrand Basin, as presented at Reno, now .
The Witwatersrand Basin, South Africa: Geological framework and mineralization processes Laurence J. Robb *, F. Michael Meyer i Department of Geology, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa Received 19 December 1994; accepted 19 June 1995 Abstract
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 ...
People go nuts on buying gold and silver if you ask a mental health therapist. Plenty of people invest in jewelry without even researching if the investment is a good one. A lot of times, there is the question if it is the best bet to invest in gold bars or those old coins that [.] Read More »
The Witwatersrand Basin is a largely underground geological formation which surfaces in the Witwatersrand. It holds the world''s largest known gold reserves and has produced over billion ounces (over 40,000 metric tons), which represents about 22% of all the gold accounted for above the surface. The basin .
The gold mines in this area are possibly the deepest mines in the world (mining operations at 3600 m and exploration coredrilling up to 4600m). Peak gold production occured in 1970 when over 1000 metric tommes were mined, generating US 1,164 billion in sales, however gold production has .
The current concepts concerning the genesis of the unique orebearing reefs of the Witwatersrand Basin and its gold resource potential are considered. The results of microscopic examination of ore from the Black, Ventersdorp Contact, Carbon Leader, and Vaal reefs, as well as of thermobarometric study of quartz, are presented.
Various theories of ore genesis explain how the various types of mineral deposits form within the Earth''s theories vary depending on the mineral or commodity examined.. Oregenesis theories generally involve three components: source, transport or conduit, and trap.
Quartzpebbleconglomerate gold deposits represent the largest repository of gold on Earth, largely due to the deposits of the Witwatersrand Basin, which account for nearly 40 percent of the total gold produced throughout Earth''s history. This deposit type has had a .
May 06, 2020· If the Wits is a paleoplacer and the gold allogenic in origin particulate and derived from outside the basin, then the Vredefort event did not create the gold deposits. However, the Wits gold ...
During that time up to seven different gold bearing conglomerate horizons have been mined from surface down to a depth of 3,100 metres and total production for the combined Durban Roodepoort Deep and Rand Leases area was over 30 million ounces of gold at a grade in excess of 5 g/t (ASX: West Wits .
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