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Elands River (North West)
, native_name_lang = , name_other = , name_etymology = Named after the Common Eland ''(Taurotragus oryx)'' , image = , image_size = , image_caption = , map = , map_size = , map_caption = , pushpin_map = South Africa , pushpin_map_size = , pushpin_map_caption= Location of the Elands River mouth , subdivision_type1 = Country , subdivision_name1 = South Africa , subdivision_type2 = Province , subdivision_name2 = North West , subdivision_type3 = , subdivision_name3 = , subdivision_type4 = , subdivision_name4 = , subdivision_type5 = Cities , subdivision_name5 = Swartruggens, Sun City , length = , width_min = , width_avg = , width_max = , depth_min = , depth_avg = , depth_max = , discharge1_location= , discharge1_min = , discharge1_avg = , discharge1_max = , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Eland
The common eland (''Taurotragus oryx''), also known as the southern eland or eland antelope, is a savannah and plains antelope found in East and Southern Africa. It is a species of the family Bovidae and genus '' Taurotragus''. An adult male is around tall at the shoulder (females are shorter) and can weigh up to with a typical range of , for females). It is the second-largest antelope in the world, being slightly smaller on average than the giant eland. It was scientifically described by Peter Simon Pallas in 1766. Mainly a herbivore, its diet is primarily grasses and leaves. Common elands form herds of up to 500 animals, but are not territorial. The common eland prefers habitats with a wide variety of flowering plants such as savannah, woodlands, and open and montane grasslands; it avoids dense forests. It uses loud barks, visual and postural movements, and the flehmen response to communicate and warn others of danger. The common eland is used by humans for leather, meat, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilanesberg
The Pilanesberg (formerly Pilandsberg) is a mountain in the North West Province, South Africa. The mountain is an ancient volcanic structure, circular in shape, that rises from flat surrounding plains. It is formed by three concentric ridges or rings of hills, of which the outermost has a diameter of about 24 km. The Pilanesberg is located 100 km to the North-West of Pretoria and is for the greater part enclosed in a protected area known as Pilanesberg National Park. The Elands River flows South of the Pilanesberg in an Easterly direction. There are a number of platinum mines right at the perimeter of the crater formation. The name "Pilanes" comes from a historic Tswana chief named Pilane. Geology Although geographically located within the Witwatersrand range, the mountain is geologically part of a feature known as the ''Pilanesberg Alkaline Ring Complex''. It is a vast ring dike of a very ancient extinct volcano that last erupted some 1,200 million years ago. The P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boer
Boers ( ; af, Boere ()) are the descendants of the Dutch-speaking Free Burghers of the eastern Cape frontier in Southern Africa during the 17th, 18th, and 19th centuries. From 1652 to 1795, the Dutch East India Company controlled this area, but the United Kingdom incorporated it into the British Empire in 1806. The name of the group is derived from "boer", which means "farmer" in Dutch and Afrikaans. In addition, the term also applied to those who left the Cape Colony during the 19th century to colonise in the Orange Free State, Transvaal (together known as the Boer Republics), and to a lesser extent Natal. They emigrated from the Cape to live beyond the reach of the British colonial administration, with their reasons for doing so primarily being the new Anglophone common law system being introduced into the Cape and the British abolition of slavery in 1833. The term ''Afrikaners'' or ''Afrikaans people'' is generally used in modern-day South Africa for the white A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Anglo-Boer War
The Second Boer War ( af, Tweede Vryheidsoorlog, , 11 October 189931 May 1902), also known as the Boer War, the Anglo–Boer War, or the South African War, was a conflict fought between the British Empire and the two Boer Republics (the South African Republic and the Orange Free State) over the Empire's influence in Southern Africa from 1899 to 1902. Following the discovery of gold deposits in the Boer republics, there was a large influx of "foreigners", mostly British from the Cape Colony. They were not permitted to have a vote, and were regarded as "unwelcome visitors", invaders, and they protested to the British authorities in the Cape. Negotiations failed and, in the opening stages of the war, the Boers launched successful attacks against British outposts before being pushed back by imperial reinforcements. Though the British swiftly occupied the Boer republics, numerous Boers refused to accept defeat and engaged in guerrilla warfare. Eventually, British scorched earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Elands River (1900)
The Battle of Elands River was an engagement of the Second Boer War that took place between 4 and 16 August 1900 in western Transvaal. The battle was fought at Brakfontein Drift near the Elands River between a force of 2,000 to 3,000 Boers and a garrison of 500 Australian, Rhodesian, Canadian and British soldiers, which was stationed there to protect a British supply dump that had been established along the route between Mafeking and Pretoria. The Boer force, which consisted of several commandos under the overall leadership of Koos de la Rey, was in desperate need of provisions after earlier fighting had cut it off from its support base. As a result, it was decided to attack the garrison along the Elands River in an effort to capture the supplies located there. Over the course of 13 days, the Elands River supply dump was heavily shelled from several artillery pieces that were set up around the position, while Boers equipped with small arms and machine guns surrounded the ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rustenburg
Rustenburg (; , Afrikaans and Dutch: ''City of Rest'') is a city at the foot of the Magaliesberg mountain range. Rustenburg is the most populous city in North West province, South Africa (549,575 in 2011 and 626,522 in the 2016 census). In 2017, the city's Gross Domestic Product ( GDP) reached ZAR 63.8 billion, accounting for 21.1% of the GDP of the North West Province, and 1.28% of the GDP of South Africa. Rustenburg was one of the official host cities of the 2010 FIFA World Cup, being in close proximity to Phokeng, the capital of the Royal Bafokeng Nation, where the Royal Bafokeng Stadium is located. The England national football team also used this as their base camp for the tournament. History Mfecane Before European settlers arrived, the area had been settled by agrarian Setswana-speaking tribes Rustenburg's population is primarily Tswana people. Partially belonging to the Royal Bafokeng Nation, extensive landowners earning royalties from mining operations. The Roy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere. Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores. Use of nickel (as natural meteoric nickel–iron alloy) has been traced as far back as 3500 BCE. Nickel was first isolated and classified a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental ( native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium ( gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmium
Osmium (from Greek grc, ὀσμή, osme, smell, label=none) is a chemical element with the symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element. When experimentally measured using X-ray crystallography, it has a density of . Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical contacts, and in other applications that require extreme durability and hardness. Osmium is among the rarest elements in the Earth's crust, making up only 50 parts per trillion ( ppt). It is estimated to be about 0.6 parts per billion in the universe and is therefore the rarest precious metal. Characteristics Physical properties Osmium has a blue-gray tint and is the densest stable element; it is approximately twice as dense as lead and narrowly denser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridium
Iridium is a chemical element with the symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of as defined by experimental X-ray crystallography. It is one of the most corrosion-resistant metals, even at temperatures as high as . However, corrosion-resistance is not quantifiable in absolute terms; although only certain molten salts and halogens are corrosive to solid iridium, finely divided iridium dust is much more reactive and can be flammable, whereas gold dust is not flammable but can be attacked by substances that iridium resists, such as aqua regia. Iridium was discovered in 1803 among insoluble impurities in natural platinum. Smithson Tennant, the primary discoverer, named it after the Greek goddess Iris, personification of the rainbow, because of the striking and diverse colors of its salts. Iridium is one of the rarest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruthenium
Ruthenium is a chemical element with the symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Russian-born scientist of Baltic-German ancestry Karl Ernst Claus discovered the element in 1844 at Kazan State University and named ruthenium in honor of Russia. Ruthenium is usually found as a minor component of platinum ores; the annual production has risen from about 19 tonnes in 2009Summary. Ruthenium platinum.matthey.com, p. 9 (2009) to some 35.5 tonnes in 2017. Most ruthenium produced is used in wear-resistant electrical contacts and thick-film resistors. A minor application for ruthenium is in platinum |
