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Venetia Diamond Mine
The Venetia Diamond Mine is South Africa's largest producer of diamonds, since 1995. It is situated close to the South African town of Alldays in the Limpopo province and is located within the 360 km² Venetia Limpopo Nature Reserve. The open cast mine is one of De Beers’ six remaining diamond mines in South Africa and the only major diamond mine to be developed in the country during the past 25 years. As such, the mine represents one of De Beers’ single biggest investments in South Africa. The mine was opened in 1992 by Harry Oppenheimer, a former De Beers chairman. In 2004 the mine had 955 employees and recovered 7,187,300 carats (1437.5 kg) of diamonds from 5,871,000 metric tons of ore Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 Apr ....In 2021 the mine will cease ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond
Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the Chemical stability, chemically stable form of carbon at Standard conditions for temperature and pressure, room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest Scratch hardness, hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth. Because the arrangement of atoms in diamond is extremely rigid, few types of impurity can contaminate it (two exceptions are boron and nitrogen). Small numbers of lattice defect, defects or impurities (about one per million of lattice atoms) color diamond blue (bor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alldays, South Africa
Alldays is a small town in the Limpopo province of South Africa that serves a large area of private game and hunting farms. It has a population of 2,987. The Venetia Diamond Mine is situated close to Alldays, located within the 360 square kilometre Venetia Limpopo Nature Reserve. It is one of De Beers’ six remaining diamond mines in South Africa and the only major diamond mine to be developed in the country during the past 25 years. Citrus farming on the banks of the Limpopo River is an important economic activity in the district. The area of is known for its arid bushveld and Mopane bush. Several large game farms are located around Alldays, many of which are known as trophy hunting destinations. The hunting practices carried out at an Alldays game farm sparked significant public outcry in September 2015; however, the Limpopo environmental department found the farm to be compliant with South African hunting legislation. The town is served by the Alldays Airport.. DAFIF DAFIF ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limpopo Province
Limpopo is the northernmost Provinces of South Africa, province of South Africa. It is named after the Limpopo River, which forms the province's western and northern borders. The capital and largest city in the province is Polokwane, while the provincial legislature is situated in Lebowakgomo. The province is made up of 3 former homelands of Lebowa, Gazankulu and Venda and the former parts of the Transvaal province. The Limpopo province was established as one of the new nine provinces after South Africa's first democratic election on the 27th of April 1994. The province's name was first "Northern Transvaal", later changed to "Northern Province" on the 28th of June 1995, together with two other provinces. The name was later changed again in 2002 to the Limpopo province. Limpopo is made up of 3 main ethnic groups namely; Pedi people, Tsonga people, Tsonga and Venda people. Traditional leaders and chiefs still form a strong backbone of the province's political landscape. Establ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venetia Limpopo Nature Reserve
{{Location map, South Africa Limpopo, float = right , width=250 , caption = Position of Venetia Limpopo Nature Reserve, label = Venetia Limpopo NR, position=background=white, lat=-22.30251, long=29.20412 The Venetia Limpopo Nature Reserve is situated in the northernmost parts of South Africa, and is owned by the De Beers Diamond Mining Company - the mine itself is actually within the confines of the reserve. The reserve is approximately 33,000 ha in size, and is characterised by the dominant mopane (''Colophospermum mopane'') veld-type. Whilst scenic, the area is very hot — summer temperatures regularly pass the 40 degrees Celsius mark. The reserve is home to three of the big five (lion, elephant and leopard — but not rhino and buffalo). There was a population of African wild dog in the park which were part of a research project of the Carnivore Conservation Group, a branch of the Endangered Wildlife Trust. Literally across the road is one of South Africa's newest natio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Beers
De Beers Group is an international corporation that specializes in diamond mining, diamond exploitation, diamond retail, diamond trading and industrial diamond manufacturing sectors. The company is active in open-pit, large-scale alluvial and coastal mining. It operates in 35 countries and mining takes place in Botswana, Namibia, South Africa, Canada and Australia. From its inception in 1888 until the start of the 21st century, De Beers controlled 80% to 85% of rough diamond distribution and was considered a monopoly. Competition has since dismantled the complete monopoly; the De Beers Group now sells approximately 29.5% of the world's rough diamond production by value through its global sightholder and auction sales businesses. The company was founded in 1888 by British businessman Cecil Rhodes, who was financed by the South African diamond magnate Alfred Beit and the London-based N M Rothschild & Sons bank. In 1926, Ernest Oppenheimer, a German immigrant to Britain and later ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Oppenheimer
Harry Frederick Oppenheimer (28 October 1908 – 19 August 2000) was a prominent South African businessman, industrialist and philanthropist. Oppenheimer was often ranked as one of the wealthiest people in the world, and was considered South Africa's foremost industrialist for four decades. In 2004 he was voted 60th in the SABC3's Great South Africans. Early life and education The son of May (Pollack) and Sir Ernest Oppenheimer, Harry was born to an assimilated Jewish family of German origins in Kimberley, the original centre for diamond mining in South Africa, and lived most of his life in Johannesburg. He had a formal Bar mitzvah ("coming of age") ceremony in the Kimberley synagogue when he turned thirteen. He converted to Christianity when he married his wife. After completing his primary schooling in Johannesburg, he attended Charterhouse School in England, before going on to study at Christ Church, Oxford, graduating in 1931 in Philosophy, Politics and Economics. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carat (unit)
The carat (ct) is a unit of mass equal to or 0.00643 troy oz, and is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, and soon afterwards in many countries around the world. The carat is divisible into 100 ''points'' of 2 mg. Other subdivisions, and slightly different mass values, have been used in the past in different locations. In terms of diamonds, a paragon is a flawless stone of at least 100 carats (20 g). The ANSI X.12 EDI standard abbreviation for the carat is CD. Etymology First attested in English in the mid-15th century, the word ''carat'' comes from Italian ''carato'', which comes from Arabic '' qīrāṭ '' قيراط , in turn borrowed from Greek ''kerátion'' κεράτιον 'carob seed', a diminutive of ''keras'' 'horn'. It was a unit of weight, equal to 1/1728 (1/12) of a pound (see Mina (unit)). History Carob seeds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metric Ton
The tonne ( or ; symbol: t) is a unit of mass equal to 1000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton (United States customary units), and the long ton ( British imperial units). It is equivalent to approximately 2204.6 pounds, 1.102 short tons, and 0.984 long tons. The official SI unit is the megagram (symbol: Mg), a less common way to express the same mass. Symbol and abbreviations The BIPM symbol for the tonne is t, adopted at the same time as the unit in 1879.Table 6 . BIPM. Retrieved on 2011-07-10. Its use is also official for the metric ton in the United States, having been adopted by the United States |
Diamond Mines In South Africa
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth. Because the arrangement of atoms in diamond is extremely rigid, few types of impurity can contaminate it (two exceptions are boron and nitrogen). Small numbers of defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (defects), green (radiation exposure), purple, pink, orange, or red. Diamond also has a ver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Mines In South Africa
A surface, as the term is most generally used, is the outermost or uppermost layer of a physical object or space. It is the portion or region of the object that can first be perceived by an observer using the senses of sight and touch, and is the portion with which other materials first interact. The surface of an object is more than "a mere geometric solid", but is "filled with, spread over by, or suffused with perceivable qualities such as color and warmth". The concept of surface has been abstracted and formalized in mathematics, specifically in geometry. Depending on the properties on which the emphasis is given, there are several non equivalent such formalizations, that are all called ''surface'', sometimes with some qualifier, such as algebraic surface, smooth surface or fractal surface. The concept of surface and its mathematical abstraction are both widely used in physics, engineering, computer graphics, and many other disciplines, primarily in representing the surfaces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
