Branches of Mathematics

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Applied mathematics

• Dynamical systems and differential equations
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Related Topics

• Electromagnetic Spectrum
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• Computational Mathematics
• Gamma Ray Optics
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• Relative Velocity
• Iciam
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• Biomedical Engineering
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• Quantum Cosmology
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• Alluvial
• Aluminium
• Antimony
• Archaean
• Argentite
• Australia
• Barite
• Bauxite
• Bayan Obo
• Beryl
• Besshi copper mine
• Bismuth
• Black sand
• Bornite
• Canada
• Cassiterite
• Chalcocite
• Chalcopyrite
• Chert
• Chromite
• Chromium
• Cinnabar
• Cobaltite
• Coltan
• Columbite
• COMEX
• Copper
• Crust (geology)
• Cumulate rocks
• Czechoslovakia
• Diatreme
• Earth
• Economic geology
• Elliot Lake
• Erzgebirge
• Feasibility study
• Galena
• Geology
• Gold
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• Iron ore
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• Jinchuan
• Kalgoorlie
• Kimberlite
• Lamproite
• Lamprophyre
• Land rehabilitation
• Lead
• Lithium
• Lode
• Magnetite
• Malachite
• Manganese
• Mercury (element)
• Metal
• Metallurgy
• Mexico
• Mineral
• Mineral exploration
• Minerals
• Mining
• Molybdenite
• Mongolia
• Mount Isa
• Mount Weld
• Native copper
• Nickel
• Niobium
• Norilsk
• NYMEX
• Ore
• Ore (disambiguation)
• Ore genesis
• Oxide
• Pachuca
• Pentlandite
• Petrology
• Phalaborwa
• Philippines
• Pisolite
• Placer mining
• Porphyry copper
• Prospecting
• Pyrolusite
• Quartz
• Rare earth elements
• Rare earths
• Red Dog mine
• Rock (geology)
• Sand dune
• Scheelite
• Silicate minerals
• Silver
• Skarn
• Skorpion Zinc
• South Africa
• Sphalerite
• Stockwork
• Subvolcanic rock
• Sudbury Basin
• Sulfide
• Sulfide mineral
• Tantalite
• Tantalum
• Template Ores
• Template talk Ores
• Thompson Belt
• Tin
• Titanium
• Tombstone, Arizona
• Tungsten
• Uraninite
• Uranium
• Vanadium
• Vermiculite
• Western Australia
• Witwatersrand
• Wolframite
• World Bank
• Zinc
• 
  

• 
  Australia
  Australia ( /əˈstreɪljə/), officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent as well as the island of Tasmania and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area. Neighbouring countries include Indonesia, East Timor and Papua New Guinea to the north; the Solomon Islands, Vanuatu and New Caledonia to the north-east; and New Zealand to the south-east.
  For at least 40,000 years before European settlement in the late 18th century, Australia was inhabited by indigenous Australians, who belonged to one or more of roughly 250 language groups. After discovery by Dutch explorers in 1606, Australia's eastern half was claimed by Great Britain in 1770 and settled through penal transportation to the colony of New South Wales from 26 January 1788. The population grew steadily in subsequent decades; the continent was explored and an additional five self-governing Crown Colonies were established.
  
  wn.com/Australia
• 
  Bayan Obo
  Bayan Obo Mining District, (Mongolian: "rich"+"ovoo"; simplified Chinese: 白云鄂博矿区; traditional Chinese: 白雲鄂博礦區; pinyin: Báiyún Èbó Kuàngqū), or Baiyun-Obo or Baiyun'ebo, is a mining town in the west of Inner Mongolia, People's Republic of China. It is under the administration of Baotou City, more than 120 kilometres (75 mi) to the south.
  The mines north of the town are the largest deposits of rare earth metals yet found and, as of 2005, responsible for 45% of global rare earth metal production.
  In the satellite image at right, vegetation appears red, grassland is light brown, rocks are black, and water surfaces are green. Two circular open-pit mines are visible, as well as a number of tailings ponds and tailings piles.
  China produced about 81,000 tons of rare earth metals in 2001; the number jumped to about 120,000 by 2006. According to the Chinese Society of Rare Earths, 9,600 to 12,000 cubic meters (340,000 to 420,000 cubic feet) of waste gas—containing dust concentrate, hydrofluoric acid, sulfur dioxide, and sulfuric acid—are released with every ton of rare metals that are mined. Approximately 75 cubic meters (2,600 cubic feet) of acidic wastewater, plus about a ton of radioactive waste residue are also produced.
  
  wn.com/Bayan_Obo
• 
  Canada
  Canada ( /ˈkænədə/) is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean. Spanning over 9,900,000 km² (3,800,000 sq mi), Canada is the world's second-largest country by total area, and its common border with the United States is the longest land border in the world.
  The land that is now Canada has been inhabited for millennia by various Aboriginal peoples. Beginning in the late 15th century, British and French colonial expeditions explored, and later settled, along the region's Atlantic coast. France ceded nearly all of its colonies in North America in 1763 after the Seven Years' War. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and territories and a process of increasing autonomy; the Canada Act 1982 severed the vestiges of legal dependence on Britain.
  
  wn.com/Canada
• COMEX
  Comex may refer to:
  
  wn.com/COMEX
• 
  Czechoslovakia
  Czechoslovakia or Czecho-Slovakia (Czech and Slovak: Československo, Česko-Slovensko) was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992. From 1939 to 1945, the state did not de facto exist because of its forced division and partial incorporation into Nazi Germany, but the Czechoslovak government-in-exile nevertheless continued to exist during this period. In 1945, the eastern part of Carpathian Ruthenia was taken over by the Soviet Union. On 1 January 1993, Czechoslovakia peacefully split into the Czech Republic and Slovakia.
  Form of state:
  Neighbours:
  Topography:
  The country was of generally irregular terrain. The western area was part of north-central European uplands. The eastern region was composed of northern reaches of Carpathian Mountains and Danube River basin lands.
  Climate:
  The weather was predominantly continental, but varied from the moderate temperature of Western Europe in the west, to more severe weather of Eastern Europe and the western Soviet Union in the east.
  
  wn.com/Czechoslovakia
• 
  Erzgebirge
  The Ore Mountains (German: Erzgebirge, Czech: Krušné hory) in Central Europe have formed a natural border between Saxony and Bohemia for many centuries. Today, the border between Germany and the Czech Republic runs just north of the main crest of the mountain range. The highest peaks are the Klínovec (German:Keilberg), which rises to 1,244 metres (4,081 ft) above sea level and the Fichtelberg (1,215 metres (3,986 ft)).
  The area played an important role as the setting of the earliest stages of the early modern transformation of mining and metallurgy from a craft to a large-scale industry, a process that preceded and enabled the later industrial revolution.
  The Ore Mountains are a Hercynian block tilted so as to present a steep scarp face towards Bohemia and a gentle slope on the German side. They were formed during a lengthy process:
  During the folding of the Hercynian mountains metamorphism occurred deep underground, forming crystalline slate and gneiss. In addition, large granite deposits are found in older magma bubbles. By the end of the Palaeozoic era, the mountains had been eroded into gently undulating hills (the Permian rump), exposing the hard rocks.
  
  wn.com/Erzgebirge
• 
  Kalgoorlie
  Coordinates: 30°44′56″S 121°27′58″E / 30.749°S 121.466°E / -30.749; 121.466
  Kalgoorlie, known as Kalgoorlie-Boulder, is a town in the Goldfields-Esperance region of Western Australia, and is located 595 kilometres (370 mi) east-northeast of state capital Perth at the end of the Great Eastern Highway. The town was founded in 1893 during the Yilgarn-Goldfields gold rush, and is located close to the so-called "Golden Mile".
  As at the 2006 census, it had a population of 28,250, making it the largest urban centre in the Goldfields-Esperance region and the fifth-largest in Western Australia.
  The name Kalgoorlie is derived from the Wangai word Karlkurla, meaning "place of the silky pears".^{[citation needed]}
  In January 1893, prospectors Patrick (Paddy) Hannan, Tom Flanagan, and Dan O'Shea were travelling to Mount Youle when one of their horses cast a shoe. During the halt in their journey, the men noticed signs of gold in the area, and decided to stay put. On 17 June 1893, Hannan filed a Reward Claim, leading to hundreds of men swarming to the area in search of gold and Kalgoorlie, originally called Hannan's, was born.
  
  wn.com/Kalgoorlie
• 
  Mexico
  Mexico (ⁱ/ˈmɛksɨkoʊ/; Spanish: México, IPA: [ˈmexiko] ( listen)), officially the United Mexican States (Spanish:  Estados Unidos Mexicanos (help·info)), is a federal constitutional republic in North America. It is bordered on the north by the United States of America; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of Mexico. Covering almost two million square kilometres (over 760,000 sq mi), Mexico is the fifth largest country in the Americas by total area and the thirteenth largest independent nation in the world. With an estimated population of over 113 million, it is the eleventh most populous country and the most populous Spanish-speaking country. Mexico is a federation comprising thirty-one states and a Federal District, the capital city.
  In Pre-Columbian Mexico many cultures matured into advanced civilizations such as the Olmec, the Toltec, the Teotihuacan, the Zapotec, the Maya and the Aztec before the first contact with Europeans. In 1521, Spain conquered and colonized the territory from its base in México-Tenochtitlan, which was administered as the Viceroyalty of New Spain. This territory would eventually become Mexico as the colony's independence was recognized in 1821. The post-independence period was characterized by economic instability, the Mexican-American War and territorial cession to the United States, a civil war, two empires and a domestic dictatorship. The latter led to the Mexican Revolution in 1910, which culminated with the promulgation of the 1917 Constitution and the emergence of the country's current political system. Elections held in July 2000 marked the first time that an opposition party won the presidency from the Institutional Revolutionary Party.
  
  wn.com/Mexico
• 
  Mongolia
  Mongolia ⁱ/mɒŋˈɡoʊliə/ (Mongolian:  Монгол улс (help·info), literally Mongol country/state) is a landlocked country in East and Central Asia. It is bordered by Russia to the north and China to the south, east and west. Although Mongolia does not share a border with Kazakhstan, its western-most point is only 38 kilometres (24 mi) from Kazakhstan's eastern tip. Ulan Bator, the capital and largest city, is home to about 45% of the population. Mongolia's political system is a parliamentary republic.
  The area of what is now Mongolia has been ruled by various nomadic empires, including the Xiongnu, the Xianbei, the Rouran, the Gökturks and others. The Mongol Empire was founded by Genghis Khan in 1206. After the collapse of the Yuan Dynasty, the Mongols returned to their earlier pattern of constant internal conflict and occasional raids on the Chinese borderlands. In the 16th and 17th centuries, Mongolia came under the influence of Tibetan Buddhism. At the end of the 17th century, all of Mongolia had been incorporated into the area ruled by the Qing Dynasty. During the collapse of the Qing Dynasty in 1911, Mongolia declared independence, but had to struggle until 1921 to firmly establish de facto independence from the Republic of China, and until 1945 to gain international recognition.
  
  wn.com/Mongolia
• Mount Weld
  Mount Weld is a mountain and a mine site in Western Australia, located about 30 km south of Laverton and 120 km east of Leonora. It ranks as one of the richest major rare earth deposits in the world.
  Rare earths are contained in secondary phosphates and aluminophosphates, presumably derived from weathering of the Proterozoic Mount Weld carbonatite The primary commercial interest at the site is targeted towards oxides as well as further niobium and tantalum deposits within the intrusive pipe of the Mount Weld carbonatite, which is approximately three kilometers in diameter.
  The main deposits are hosted within the soil/regolith horizon that blankets the entire carbonatite and form shallow lenses within 60 m of the surface. The most important rare earth oxide deposit, the Central Lanthanide Deposit, CLD, is located at the center of the carbonatite with the niobium/tantalum and other deposits generally located towards outer fringes. Discovered in 1988, the CLD represents a spectacular enrichment of rare earth deposit sediments. The deposit is believed to be the largest and highest grade of its type in the world.
  
  wn.com/Mount_Weld
• 
  Norilsk
  Norilsk (Russian: Нори́льск; IPA: [nɐˈrʲilʲsk]) is an industrial city in Krasnoyarsk Krai, Russia, located between the Yenisei River and the Taymyr Peninsula. Population: 175,301 (2010 Census preliminary results); 134,832 (2002 Census); 174,673 (1989 Census).
  Norilsk is the northernmost city in Siberia and the world's second largest city (after Murmansk) north of the Arctic Circle. Norilsk, Yakutsk, and Vorkuta are the only large cities in the continuous permafrost zone.
  Geographically, it lies between Taymyrsky Dolgano-Nenetsky District to its north, and Turukhansky District to its south.
  Norilsk was founded by the end of the 1920s; however, the official date of founding is traditionally set to 1935, when Norilsk was expanded as a settlement for the Norilsk mining-metallurgic complex and became the center of the Norillag system of GULAG labor camps.^{[citation needed]} It was granted the urban-type settlement status in 1939 and town status in 1953.^{[citation needed]}
  Norilsk, located between the West Siberian Plain and Central Siberian Plateau at the foot of the 1,700-meter (5,600 ft) high Putoran Mountains, is situated on some of the largest nickel deposits on Earth. Consequently, mining and smelting ore are the major industries. Norilsk is the center of a region where nickel, copper, cobalt, platinum, palladium, and coal are mined. Mineral deposits in the Siberian Craton had been known for two centuries before Norilsk was founded, but mining began only in 1939, when the buried portions of the Norilsk-Talnakh intrusions were found beneath mountainous terrain.
  
  wn.com/Norilsk
• 
  NYMEX
  Coordinates: 40°42′52″N 74°1′1″W / 40.71444°N 74.01694°W / 40.71444; -74.01694
  The New York Mercantile Exchange (NYMEX) is a commodity futures exchange owned and operated by CME Group of Chicago. NYMEX is located at One North End Avenue in the World Financial Center in the Battery Park City section of Manhattan, New York City. Additional offices are located in Boston, Washington, D.C., Atlanta, San Francisco, Dubai, London, and Tokyo.
  The company's two principal divisions are the New York Mercantile Exchange and Commodity Exchange, Inc (COMEX), once separately owned exchanges. NYMEX Holdings, Inc., the former parent company of the New York Mercantile Exchange and COMEX, became listed on the New York Stock Exchange on November 17, 2006, under the ticker symbol NMX. On March 17, 2008, Chicago based CME Group signed a definitive agreement to acquire NYMEX Holdings, Inc. for $11.2 billion in cash and stock and the takeover was completed in August 2008. Both NYMEX and COMEX now operate as designated contract markets (DCM) of the CME Group. The other two designated contract markets in the CME Group are the Chicago Mercantile Exchange and the Chicago Board of Trade.
  
  wn.com/NYMEX
• 
  Pachuca
  Pachuca, formally known as Pachuca de Soto, is the capital of the Mexican state of Hidalgo. It is located in the south-central part of the state. Pachuca de Soto is also the name of the municipality of which the city serves as municipal seat. Pachuca is located about 90 km from Mexico City via Highway 85.
  The name Pachuca has been traced to several possible etymologies and has been much debated. It has been traced to the word “pachoa,” meaning strait or opening, “Pachoacan,” meaning place of government, or place of silver and gold, and “patlachuican,” meaning place of factories or tears. The official name of Pachuca is Pachuca de Soto in honor of congressman Manuel Fernando Soto, who is given credit for the creation of Hidalgo state. Its nickname of “La bella airosa” (Beautiful Airy City) comes from the strong winds that blow into the valley through the canyons to the north of the city. The area had been long inhabited but except for some green obsidian, but the mining that Pachuca is famous for began in the mid-16th century, during Spanish colonial rule. Pachuca remained a major mining center until the mid-20th century, with the city’s fortunes going up and down with the health of the mining sector. In the mid-20th century, a major downturn in mining pushed Pachuca to change its economy to industry, with the revamping of the Universidad Autónoma de Hidalgo. Today, mining is only a fraction of the municipality’s economy.
  
  wn.com/Pachuca
• 
  Phalaborwa
  Phalaborwa is a town situated in the Mopani District Municipality, Limpopo province, South Africa. It is located near the confluence of the Ga-Selati River and the Olifants, halfway up along the eastern border of the Kruger National Park in the Lowveld. This area, also known as the Valley of the Olifants, has the highest winter temperatures in South Africa. The rainfall is low and the average winter temperatures range from 11°C to 25°C. During summer the average temperatures vary from 20°C to 47 °C with occasional heavy rainfall.
  Originally a mining town and still home to the Palabora Mining Company), the massive open cast mine is Africa's widest man-made hole at almost 2,000 meters wide.
  Tourism and wildlife play a dominant role in the life of this town. It is the only town in South Africa that borders the Kruger National Park, the Mozambiquan border is only two hours drive away. Lately, with the incorporation of various private game reserves into the conservancy area, Phalaborwa is all but enclaved by nature conservancies. The Hans Merensky Golf Estate is situated on the skirts of the town.
  
  wn.com/Phalaborwa
• 
  Philippines
  The Philippines ⁱ/ˈfɪlɨpiːnz/ FI-lə-peenz (Filipino: Pilipinas [ˌpɪlɪˈpinɐs]), officially known as the Republic of the Philippines (Filipino: Republika ng Pilipinas) is a sovereign country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam. The Sulu Sea to the southwest lies between the country and the island of Borneo, and to the south the Celebes Sea separates it from other islands of Indonesia. It is bounded on the east by the Philippine Sea. Its location on the Pacific Ring of Fire and its tropical climate make the Philippines prone to earthquakes and typhoons but have also endowed the country with natural resources and made it one of the richest areas of biodiversity in the world. An archipelago comprising 7,107 islands, the Philippines is categorized broadly into three main geographical divisions: Luzon, Visayas, and Mindanao. Its capital city is Manila.
  With an estimated population of about 98 million people, the Philippines is the 7th most populated Asian country and the 12th most populated country in the world. An additional 12.5 million Filipinos live overseas. Multiple ethnicities and cultures are found throughout the islands. In prehistoric times, Negritos were some of the archipelago's earliest inhabitants. They were followed by successive waves of Austronesian peoples who brought with them influences from Malay, Hindu, and Islamic societies. Trade introduced Chinese cultural influences which remain to this day.
  
  wn.com/Philippines
• 
  Red Dog mine
  The Red Dog mine is a zinc and lead mine located in a remote region of the Arctic, within the boundaries of the Red Dog Mine census-designated place in the Northwest Arctic Borough of the U.S. state of Alaska.
  The mine is the world's largest producer of zinc and has the world's largest zinc reserves. Red Dog accounts for 10% of the world's zinc production. Red Dog accounted for 55% of the mineral value produced in Alaska in 2008. In 2008 the mine produced 515,200 metric tons (507,100 LT; 567,900 ST) of zinc, 122,600 metric tons (120,700 LT; 135,100 ST) of lead, and 283 metric tons (9,100,000 ozt) of silver, for a total metal value of over one billion dollars. At the end of 2008 the mine had reserves of 61,400,000 metric tons (60,400,000 LT; 67,700,000 ST) of zinc at a grade of 17.1% and 61,400,000 tonnes (60,400,000 LT; 67,700,000 ST) of lead at a grade of 4.5%, as well as significant additional zinc and lead in the less well-measured resource category.
  Red Dog is located on land owned by the NANA Regional Corporation and is operated by the commercial mining company Teck Resources in partnership with NANA Development Corporation. Ore concentrate taken from the mine is trucked westward to a shipping facility on the Chukchi Sea and stored there until the shipping season.
  
  wn.com/Red_Dog_mine
• 
  Skorpion Zinc
  Skorpion Zinc is the 8th largest Zinc mine in the world, producing Special High Grade (SHG) Zinc. Since November 2010 it is owned and operated by Vedanta.
  Skorpion is located in southwest Namibia, near the town of Rosh Pinah.
  Skorpion is a unique mine in several ways. Firstly, it is a supergene zinc ore body composed of alluvial accumulations of zinc carbonate and silicate minerals of detrital nature deposited within a palaeochannel. There are no other currently commercially viable deposits of this type.
  It is also one of the few mines in the world which mines "zinc oxides", which actually is a mixture of non sulphidic zinc minerals such as smithsonite, hydrozincite, tarbuttite and willemite.
  Finally, it is the only zinc processing facility to use solvent extraction-electrowinning metallurgy to process and refine its zinc products (others using conventional smelting and roasting).
  The Skorpion SX-EW plant creates Special High Grade, ultra-pure zinc cathode as a primary product, which is so low in impurities that it commands a price premium.
  
  wn.com/Skorpion_Zinc
• 
  South Africa
  Coordinates: 30°S 25°E / 30°S 25°E / -30; 25
  South Africa, officially the Republic of South Africa, is a country located at the southern tip of Africa. It is divided into nine provinces and has 2,798 kilometres (1,739 mi) of coastline. To the north of the country lie the neighbouring territories of Namibia, Botswana and Zimbabwe; to the east are Mozambique and Swaziland; while Lesotho is an enclave surrounded by South African territory.
  South Africa is multi-ethnic and has diverse cultures and languages. Eleven official languages are recognised in the constitution. Two of these languages are of European origin: South African English and Afrikaans, a language which originated mainly from Dutch that is spoken by the majority of white and Coloured South Africans. Though English is commonly used in public and commercial life, it is only the fifth most-spoken home language. All ethnic and language groups have political representation in the country's constitutional democracy comprising a parliamentary republic; unlike most parliamentary republics, the positions of head of state and head of government are merged in a parliament-dependent President.
  
  wn.com/South_Africa
• 
  Sudbury Basin
  The Sudbury Basin, also known as Sudbury Structure or the Sudbury Nickel Irruptive, is a major geologic structure in Ontario, Canada. It is the second-largest known impact crater or astrobleme on Earth, as well as one of the oldest.
  The basin is located on the Canadian Shield in the city of Greater Sudbury, Ontario. The former municipalities of Rayside-Balfour and Valley East lie within the Sudbury Basin, which is referred to locally as "The Valley". The urban core of the former city of Sudbury lies on the southern outskirts of the basin.
  The Sudbury Basin is located near a number of other geological structures, including the Temagami Magnetic Anomaly, the Lake Wanapitei impact crater, the western end of the Ottawa-Bonnechere Graben, and the eastern end of the Great Lakes Tectonic Zone although none of the structures are directly related to each other in the sense of resulting from the same geophysical processes.
  The Sudbury basin formed as an impact from a bolide approximately 10–15 km (6.2–9.3 mi) in diameter that occurred 1.849 billion years ago in the Paleoproterozoic era.
  
  wn.com/Sudbury_Basin
• 
  Tombstone, Arizona
  Tombstone is a city in Cochise County, Arizona, United States, founded in 1879 by Ed Schieffelin in what was then Pima County, Arizona Territory. It was one of the last wide-open frontier boomtowns in the American Old West. From about 1877 to 1890, the town's mines produced USD $40 to $85 million in silver bullion, the largest productive silver district in Arizona. Its population grew from 100 to around 14,000 in less than 7 years. In 1881, it became the county seat of the new Cochise County.
  Far distant from any other metropolitan city, by mid-1881 Tombstone boasted a bowling alley, four churches, an ice house, a school, two banks, three newspapers, and an ice cream parlor, alongside 110 saloons, 14 gambling halls, and numerous dancing halls and brothels. All of these were situated among and on top of a large number of dirty, hardscrabble mines. The gentlemen and ladies of Tombstone attended operas presented by visiting acting troupes at the Schieffelin Hall opera house, while the miners and Cowboys saw shows at the Bird Cage Theatre, "the wildest, wickedest night spot between Basin Street and the Barbary Coast."
  
  wn.com/Tombstone,_Arizona
• 
  Western Australia
  Coordinates: 26°0′S 121°0′E / 26°S 121°E / -26; 121
  Western Australia (commonly abbreviated as WA) is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east. Western Australia is Australia's largest state and the second-largest subnational entity in the world. The state has approximately 2.3 million inhabitants (around 10% of the national total), the majority of whom live in the south-west corner of the state.
  The first European to visit Western Australia was the Dutch explorer Dirk Hartog, who visited the Western Australian coast in 1616. The British established a military outpost at King George Sound, near present-day Albany, in 1826, which was followed by the establishment of the Swan River Colony in 1829, including the townsite of the present-day capital, Perth.
  
  wn.com/Western_Australia
• 
  Witwatersrand
  The Witwatersrand is a large sedimentary range of rocky hills in South Africa. Although it has an elevation of 1700–1800 metres above sea-level, it appears low because of the average height of the surrounding mountain plateu. The Witwatersrand runs in an east-west direction through Gauteng. The word in Afrikaans means "the ridge of white waters".
  Geologically it is complex, but the principal formations are quartzites, conglomerates and shales of the Witwatersrand System.
  The Witwatersrand range forms a continental divide with rivers to the north such as the Crocodile River draining into the Limpopo River and Indian Ocean and with the run-off to the south draining into the Orange River and Atlantic. The Witwatersrand lies within the province of Gauteng, formerly called the PWV area, an acronym for Pretoria, Witwatersrand, and Vereeniging.
  The rocks of the "Rand" or reef, as the Witwatersrand is sometimes known, are rich in uranium and gold. The area is famous for being the source of 40% of the gold ever mined from the earth. It extends for 280 kilometres from Klerksdorp in the west to Bethal in the east and is 4 kilometres (2.5 mi) deep in places. The South African currency was named after it. The reef's most northerly tip was discovered only a few kilometres from the present day town of Magaliesburg, at Blaauwbank, in 1874.
  
  wn.com/Witwatersrand

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