Nov 26 2017 Wits 2 0 and Palaeoplacer Gold Deposits No matter how you choose to spell it paleoplacer or palaeoplacer or if you choose to hyphenate
1 Introduction Almost 50 000 tonnes or 40 of the gold ever mined has come from the Witwatersrand Basin which still contains over a third of the world s unmined reserves Frimmel and Minter 2002 Extraction of the basin s gold is now in its mature stages with exploration and production efforts being focused primarily on identifying remaining ore pockets and larger prizes in down dip
The Witwatersrand deposits in South Africa represent the largest repository of gold in the World and a major resource of uranium The genesis of the gold and uranium ores in the quartz pebble conglomerates reefs however is still a matter of considerable discussion Opinion has been divided over whether they represent paleo placers that have been partly remobilised by hydrothermal fluids or
12 ensp 0183 ensp 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
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 socalled mixed type of primary and secondary gold deposits
Mining was under the control of the state but the mines may have been The discovery of gold in the Witwatersrand led to the Second Boer War and
The geochemistry of Witwatersrandtype gold deposits and the possible influence of ancient prokaryotic communities on gold dis solution and precipitation Precambrian Res 30 303319 Compared to the prokaryotedominated lower Proterozoic there are few environments now
Dec 11 2016 If you own any gold there is about a 50 chance it comes from the Witwatersrand Basin in South Africa
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
Witwatersrand ridge of gold bearing rock mostly in Gauteng province South Africa Its name means Ridge of White Waters The highland which forms the watershed between the Vaal and Limpopo rivers is about 62 miles 100 km long and 23 miles 37 km wide its average elevation is about 5 600
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
lavas uppermost part of photograph at the Vaal Reefs mine in the Klerksdorp Gold Field Witwatersrand South Africa Hammer for scale Photograph by Cliff D
2018620 ensp 0183 enspIndia and West Australia with a particular emphasis Derry 1961 considered Archeanon gold and copper Proterozoic boundaries on a global scale and highlighted the Witwatersrand golduranium mineralization and the iron ore deposits of west Africa specifically Mauritania and Liberia
PILBARA GOLD THE WITS END PROJECT WESTERN AUSTRALIA to the Witwatersrand Basin and its related clastic sedimentary hosted gold deposits
gold deposits from alluvial gold settled in the area to form the gold The discovery of gold on the Witwatersrand also created a super wealthy
Johannesburg South Africa – Gold mining belt Witwatersrand The map gives an overview of the ethnic social and economic differentiation in the Witwatersrand Region with the metropolis of Johannesburg at its heart The region is at the centre of South African gold mining which has permanently marked the man made landscape with its many
Imagine gold mining shafts nearly two and a half miles below the surface and it taking two hours for miners to get to their work stations Imagine a pit so large that it can be seen from outer space No reason to imagine those are the realities in the mining of gold revealed in The World s 10 Most Prolific Gold
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
2017425 ensp 0183 enspWitwatersrand is a picturesque 35mile long escarpment in the Guateng Province of South Africa It has an average elevation of around 5 600 feet The scarp primarily formed of hard erosion resistant quartzite sedimentary rocks as well as banded ironstones and marine lava deposits interspersed with relatively softer rocks nestles a large number of waterfalls
Abstract Studies of the morphology and other properties of the gold particles in the fossil placer gold deposits of the Witwatersrand provide fascinating glimpses of
Apr 20 2017 At a first glance the Witwatersrand basin the largest known gold resource African gold rush and the discovery of much more gold deposits
The gold in the Witwatersrand Basin area was deposited in Archean that the gold in those mineral deposits came from unusual 3000
A region of South Africa around the city of Johannesburg Consisting of a series of parallel rocky ridges it forms a watershed between the Vaal and Olifant Rivers The region contains rich gold deposits first discovered in 1886 Also called the Rand
Cradle Gold understands that sustainable mining operations in the Witwatersrand Basin requires us to tap into the immense knowledge and potential of our people by allowing them to participate in the value created through their efforts
The gold is divided into primary gold which is found in a finely dispersed form in the sulfides and secondary gold which runs through the gravel and its mineral cement in thread vein lets The uranium minerals are represented by thucholite uranite and brannerite The problem of the genesis of the Witwatersrand is still debated
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
South African Journal of Economics middot Volume 48 Issue 2 middot South The Early History of the Witwatersrand Gold Mining Company A C M WEBB Lecturer in
focus on gold mining reinforces the fact that there is a wide diversity in gold deposit types There is a need to summarize such information and more importantly to attempt to synthesize it into a coherent classifica tion of gold deposits The purpose of this paper therefore is to present a
The Witwatersrand Gold Rush was a gold rush in 1886 that led to the gold deposits from alluvial gold settled in the area to form the gold
Jun 3 2015 The placer and hydrothermal models of the origin of the Witwatersrand gold deposit differ in the interpretation of the degree of involvement of
This page is about witwatersrand gold mining click here to get more infomation about witwatersrand gold mining Gold was discovered in the Witwatersrand
Archaean quartz pebble conglomerates QPCs with abundant detrital pyrite are commonly of economic interest The Witwatersrand or Wits Basin in South Africa is the best example of a sedimentary succession known for its gold and uranium mineralization associated with detrital pyrite The Mesoarchaean sedimentary rocks of the Witwatersrand Supergroup host the richest and the single
2017420 ensp 0183 enspIn 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
Feb 2 2015 The richest gold ore in Witwatersrand is found in thin layers rich in carbon plating fibres of ancient microbial life forms Photo James St John
18 ensp 0183 ensp 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 This elliptical basin stretches over an arc of roughly 400km traversing across the Free State North West and
Whereas gold occurred as alluvial deposits and nuggets in Mpumalanga the gold of the Witwatersrand was more difficult to extract and called for special crushing equipment and chemical extraction processes Mining companies specialised industries and an organised work
Caracle Creek has extensive experience in the understanding modelling and targeting of palaeoplacer gold deposits having worked on gold deposits in the Witwatersrand of South Africa and on exploration projects targeting these deposit types in Canada
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