Search results
Results From The WOW.Com Content Network
Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystals. [6] The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the ...
Smoky quartz is a brown to black variety of quartz. It goes by various names, depending on the colour: a dark-brown to black opaque variety is called "morion"; a yellow-brown variety from Scotland is known as "cairngorm", the colour being a result of ferric oxide impurity.
The Struben brothers were engaged in active mining operations at Confidence Reef until 1888, extracting gold from a quartz vein that they had discovered. Following their departure, the site retained its importance within South Africa's mining history.
Thousands bought into the dream that a tiny village in South Africa was sitting on hidden treasure. For many, it was a dream fueled by need, not a desire for riches. Quartz and shattered dreams ...
TASTE Holdings is a South African management group with subsidiaries in the food and jewellery market. It is listed on the JSE with ticker symbol is of TAS, after it have been moved from the AltX board in June 2011.
Production of gold and diamonds, which is mostly artisanal, comes from the regions of Berberati, Haute-Kotto, and Haute-Sangha.In 2006, diamond production increased to about 420,000 carats (84 kg) from a revised 383,294 carats (76.6588 kg) in 2005; diamond exports, which were mainly destined for Europe and Israel, amounted to about 416,000 carats (83.2 kg) and were valued at $59 million.
The company was founded in 1975 by a consortium that included Anthony Simon Malone, and acquired Rand London Mines. In the following years Metorex acquired additional properties mining a variety of minerals including gold, coal, asbestos, copper, zinc and tin. The mines were located in South Africa, Namibia and Zambia.
JCI or Johannesburg Consolidated Investment Co. Ltd. was founded in 1889 by the British entrepreneur Barney Barnato. JCI was a major force in South African mining for over 100 years. Using his investments in the Kimberley diamond fields , particularly his 25% share in De Beers , Barnato foresaw the value of and invested in the potential of the ...