History of Witwatersrand Basin gold production rate (p, in …
We investigated the gold-bearing Black Reef Formation in the West Rand and Carletonville goldfields of South Africa using approaches that are components of a transitional framework toward fully ...
The Witwatersrand Basin and Its Gold Deposits
The Mesoarchaean Witwatersrand Basin represents the largest known gold anomaly and has produced more gold than any other ore province in the world. …
Historic Overview of the Witwatersrand Goldfields.
The significance of the Witwatersrand goldfields, both for the world economy (by providing more than one-third of all gold ever available to central banks) and for South Africa (by having provided hundreds of thousands of employment opportunities directly in the mines and several times more in ancillary and supported industries), cannot be …
Cornish Miners and the Witwatersrand Gold Mines in …
4 became predominantly supervisory, and, as they did so, the numbers and roles of Cornish miners in particular, decreased. They were, however, the largest group of skilled miners during the
The Witwatersrand Goldfields, Banket & Mining Practice; …
Buy The Witwatersrand Goldfields, Banket & Mining Practice; With an Appendix on the Banket of the Tarkwa Goldfield, West Africa by Samuel John Truscott online at Alibris. We have new and used copies available, in 0 edition - starting at . Shop now.
All that glitters... Acid mine drainage: The toxic legacy of …
In the Witwatersrand goldfields, 30 kilometers south of the caves, more than a century of mining has left the region littered with mounds of waste, known as tailings dumps, and underlain by a deep underground network of abandoned mine shafts, which are gradually filling with water. Today, the mines are producing less and less gold — and …
Sulphidation in the Witwatersrand Goldfields: evidence from …
There is extensive textural evidence for sulphidation in the Middelvlei Reef of the Carletonville Goldfield, South Africa. Secondary iron sulphides have replaced sand- and pebble-sized elasts in conglomerate, as well as matrix material in …
(PDF) Hydrothermal replacement model for Witwatersrand …
the basin margin and encompassing all the goldfields and the full 2- to 3-km thickness of the Central Rand Group (Fig. 4A- C; Phillips, 1988; Phillips and Law, 1994, 2000).
The Witwatersrand Goldfields, Banket & Mining Practice: …
Add to Cart Add this copy of The Witwatersrand Goldfields, Banket And Mining to cart. $70.64, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2008 by Kessinger Publishing.
ResearchGate
ABSTRACT The Witwatersrand goldfields contain abundant assemblages that include pyrophyllite, chloritoid, chlorite, kaolinite and/or kyanite, with quartz. A chemographic analysis of the system Fe ...
The Witwatersrand Goldfield, South Africa | Request PDF
Request PDF | On Jul 4, 2021, Bruce Cairncross published The Witwatersrand Goldfield, South Africa | Find, read and cite all the research you need on ResearchGate
Witwatersrand goldfield acid mine drainage 'with us for …
AMD, which is a legacy of more than 120 years of gold mining on the Witwatersrand's goldfields, is caused when water flows over or through sulphur-bearing (pyrite) materials forming solutions of ...
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 …
Carlin, Witwatersrand, and Some Other Gold-only Examples
1 Carlin Gold Province, Nevada USA. The Carlin Gold Province refers to many goldfields in Northern Nevada that share some geography, geology and age characteristics. Within this area, there are over 100 medium to large goldfields hosted mostly in low to medium grade metasedimentary rocks of Paleozoic age.
The Effects of Uranium Mining on Health – Case Studies …
goldfields in South Africa . Mariette Liefferink . The FSE is a federation of community based civil society organisations committed to the realisation of the constitutional right to an environment that is not harmful to health or well-
Witwatersrand gold: discovery matters
Abstract. Descriptions of the Witwatersrand goldfields have invoked superlatives around themes including great wealth, huge depths, giant mines and innovative engineering. After its discovery in 1886 and further discoveries in the 1930s and 1940s, the Witwatersrand dominated world gold peaking at 1000 t Au production in 1970.
Schematic geological map of the Witwatersrand Basin with …
Witwatersrand Basin in South Africa (Fig. 1) is the largest gold province in the world. With over 120 years of exploitation in the goldfields and the decline of accessible high-grade reefs, in ...
The Witwatersrand Goldfield, South Africa | Request …
Goldfields extend for 300 km around the margin of the Archaean Witwatersrand Basin of South Africa associated with regional greenschist facies …
Gold Fields South Deep Gold Mine
The Wits Basin, as it is more commonly known, is the single largest gold-producing district in the world, measuring 300km in length and 160km in width. The Wits Basin was formed between 2.7 billion and 3.1 billion years ago and attains a depth of 6,000m. The origins of the gold within the reefs is best described by the modified placer theory ...
Sulphidation in the Witwatersrand Goldfields: evidence …
showing locations of the major goldfields. The inset shows the location West Driefontein Gold Mine with respect to Carletonville and the location of the study area on West Driefontein. R. E. MYERS ETAL. contrasts in the mineralogy between low grade and very high grade areas might be present.
Hydrothermal alteration in the Witwatersrand goldfields
A hydrothermal model for Witwatersrand gold has recently been outlined by Phillips and Powell (2011), covering fluid and gold sources, fluid channelways, solubility of gold and related components, and viable chemical precipitation mechanisms. This model is directly analogous to the genetic model we use to explain many Archean greenstone, …
Current reclamation of historical uraniferous tailings dams
Winde F (2009) Uranium pollution of water resources in mined-out and active goldfields of South Africa – A case Study in the Wonderfonteinspruit Catchment on extent and source of U-contamination and associated health risks. In: Abstracts of the International Mine Water Conference, 19-23 October, Pretoria, South Africa: Cilla Taylor ...
The Witwatersrand goldfields, banket & mining practice : …
Witwatersrand goldfields, banket & mining practice. Truscott, S.J. (Samuel John), b. 1870. 610589357. Notes: "The genesis of the Witwatersrand banket" by John Hays Hammond: . [123]-128. Show more information. WorldCat is the world's largest library catalog, helping you find library materials online.
The Witwatersrand Goldfields, Banket & Mining Practice:…
The Witwatersrand Goldfields, Banket & Mining Practice: With an Appendix On the Banket of the Tarkwa Goldfield, West Africa
Gold Fields South Deep Gold Mine
C-Lower. DEPARTMENT: Metallurgical Plant. SITE: South Deep Gold Mine. Download. Telephone: +27 11 411 1600. Address: South Deep Gold Mine, Old Vereeniging Road, Farm Modderfontein, Westonaria, 1780. South Deep Gold Mine is …
Historic overview of the Witwatersrand goldfields : a review …
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A Review of the Witwatersrand Basin
Gold mining in the Witwatersrand Basin has been responsible for the creation of the metropolis of Johannesburg and many thriving mining …
Chapter 31: Geologic Evidence of Syngenetic Gold in the
Gold grade in the Witwatersrand goldfields decreased by 49% over a period of 30 years (Mü ller and Frimmel 2010;Tucker et al. 2016; Frimmel and Nwaila 2020). It is estimated that an inferred ...
The Witwatersrand Basin, South Africa: Geological …
The Witwatersrand Basin formed over a period of 360 Ma between 3074 and 2714 Ma. Pulses of sedimentation within the sequence and its precursors were episodic, occurring between 3086-3074 Ma (Dominion Group), 2970-2914 Ma (West Rand Group) and 2894-2714 Ma (Central Rand Group).
The Witwatersrand Goldfield, South Africa
USD 16.00 Add to cart. PDF download + Online access. 48 hours access to article PDF & online version. Article PDF can be downloaded. Article PDF can be printed. USD 58.00. * Local tax will be added as applicable. Published in Rocks & …
Witwatersrand gold deposits formed by volcanic …
The Witwatersrand Basin in South Africa is one of the best-preserved records of fluvial sedimentation on an Archaean continent 1. The basin hosts the worlds biggest …
Flooding of the underground mine workings of the old
The difference in topo-graphic elevation across these goldfields creates a driving hydrostatic head which has caused the discharge of acid mine drainage in the West Rand Gold Field and threatens to cause similar problems in the Central and East Rand. Laboratory simulations and simple models have been used to try to understand the …
Geological setting and mineralisation
The MR is correlated with the South Reef of the Central Rand Goldfields. It occurs some 55 metre above the CL over most of the mining right area, except where eliminated by the VCR erosion surface, and is made up of …
The Formation and Preservation of the Witwatersrand Goldfields…
The Witwatersrand goldfields in South Africa have been, and promise to remain, the world's largest goldproducing province, at leat for the medium-term future. The majority of gold occurs, together with pyrite, uraninite, and local bitumen, on degradational surfaces of fluvial conglomerates that were laid down in the 2.90 to 2.84 Ga Central ...
Chapter 31: Geologic Evidence of Syngenetic Gold in the …
Most recent research on the Witwatersrand gold deposits has focused on postdepositional processes, often on a microscale, thereby constraining conditions of …