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Merlin Diamond Mine
The Merlin diamond mine is one of only three diamond mines in Australia. The mine is located in the Northern Territory of Australia, about 80 kilometres south of Borroloola. The mine operated for a period of about three years from 2000 to mid-2003, during which time it produced about 500,000 carats (100 kg) of high quality diamonds. The Merlin mine has an unusually high proportion of gem-quality diamonds: 65% of production is gem-quality, and only 35% is classified as near-gem or industrial quality. This compares to a worldwide average of just 20% gem-quality diamond production at diamond mines worldwide, and a mere 5% gem-quality production at Australia's largest diamond mine, Argyle diamond mine. The high ratio of gem-quality diamonds is responsible for a relatively high value of $108 USD per carat (540 $/g). The known ore grade at Merlin is about 0.2 carats (40 mg) per tonne, although exploration continues under the mine's new owner. The largest diamond produced at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borroloola
Borroloola ( local Aboriginal languages: ''Burrulula'') is a town in the Northern Territory of Australia. It is located on the McArthur River, about 50 km upstream from the Gulf of Carpentaria. Location Borroloola lies on the traditional country of the Yanyuwa people, on the coastal plain between the Barkly Tablelands and the Gulf of Carpentaria. Rivers that run from the Tablelands escarpment to the Gulf regularly flood in the wet season, making travel on the unsealed section of Highway One along the coastal plain to Queensland impossible. The rivers of this region have carved spectacular gorges through sandstone deposits in their upper reaches. The rivers and coastal areas are host to barramundi, earning Borroloola a reputation among sports fisherman, and also to the deadly saltwater crocodile. The region has little rain from May to September and is characterised by lightly treed Savanna grasslands. History Garrwa (also known as Garawa) is a language of the Gulf region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
States And Territories Of Australia
The states and territories are federated state, federated administrative divisions in Australia, ruled by regional governments that constitute the second level of governance between the Australian Government, federal government and local government in Australia, local governments. States are self-governance, self-governing polity, polities with incomplete sovereignty (having ceded some sovereign rights to federation) and have their own state constitution (Australia), constitutions, legislatures, ministry (government department), departments, and certain civil authority, civil authorities (e.g. Judiciary of Australia#State and territory courts and tribunals, judiciary and state police#Australia, law enforcement) that administer and deliver most public policy, public policies and programs. Territories can be autonomous administrative division, autonomous and administer local policies and programs much like the states in practice, but are still constitutionally and financially su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Territory
The Northern Territory (commonly abbreviated as NT; formally the Northern Territory of Australia) is an Australian territory in the central and central northern regions of Australia. The Northern Territory shares its borders with Western Australia to the west ( 129th meridian east), South Australia to the south ( 26th parallel south), and Queensland to the east ( 138th meridian east). To the north, the territory looks out to the Timor Sea, the Arafura Sea and the Gulf of Carpentaria, including Western New Guinea and other islands of the Indonesian archipelago. The NT covers , making it the third-largest Australian federal division, and the 11th-largest country subdivision in the world. It is sparsely populated, with a population of only 249,000 – fewer than half as many people as in Tasmania. The largest population center is the capital city of Darwin. The archaeological history of the Northern Territory may have begun more than 60,000 years ago when humans first se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Australian Diamonds Limited
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''north'' is related to the Old High German ''nord'', both descending from the Proto-Indo-European unit *''ner-'', meaning "left; below" as north is to left when facing the rising sun. Similarly, the other cardinal directions are also related to the sun's position. The Latin word ''borealis'' comes from the Greek '' boreas'' "north wind, north", which, according to Ovid, was personified as the wind-god Boreas, the father of Calais and Zetes. ''Septentrionalis'' is from ''septentriones'', "the seven plow oxen", a name of ''Ursa Major''. The Greek ἀρκτικός (''arktikós'') is named for the same constellation, and is the source of the English word ''Arctic''. Other languages have other derivations. For example, in Lezgian, ''kefer'' can mean b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamonds
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 v ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diamond Mines
There are a limited number of commercially available diamond mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply. Diamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action. There is also at least one example of a heritage diamond mine ( Crater of Diamonds State Park). Africa Angola * Catoca diamond mine * Fucauma diamond mine * Luarica diamond mine Botswana *Damtshaa diamond mine *Jwaneng diamond mine * Letlhakane diamond mine *Orapa diamond mine * Karowe diamond mine * Lerala diamond mine South Africa * Baken diamond mine *Cullinan diamond mine (previously "Premier mine") * Finsch diamond mine *Kimberley, Northern Cape * Koffiefontein mine * Venetia diamond mine Others * Baba Diamond Fields, Zimbabwe *Marange diamond fields, Zimbabwe * Murowa diamond mine, Zimbabwe * Williamson diamond mine, Tanzania * L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyle Diamond Mine
The Argyle Diamond Mine was a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle was at times the largest diamond producer in the world by volume (14 million carats in 2018), although the proportion of gem-quality diamonds was low. It was the only known significant source of pink and red diamonds (producing over 90% of the world's supply), and additionally provided a large proportion of other naturally coloured diamonds, including champagne, cognac and rare blue diamonds. Mining operations ceased in November 2020, after 37 years of operations and producing more than 865 million carats of rough diamonds. Mine operator Rio Tinto planning to decommission the mine and rehabilitate the site at least through 2025. The Argyle diamond mine is also notable for being the first successful commercial diamond mine exploiting a volcanic pipe of lamproite, rather than the more usual kimberlite pipe; much earlier attempts to mine diamonds from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ore Grade
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 April 2021Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., eds., 2011, Glossary of Geology: American Geological Institute, 799 p. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals. The ''grade'' of ore refers to the concentration of the desired material it contains. The value of the metals or minerals a rock contains must be weighed against the cost of extraction to determine whether it is of sufficiently high grade to be worth mining, and is therefore considered an ore. Minerals of interest are generally oxides, sulfides, silicates, or native metals such as copper or gold. Ores must be processed to extract the elements of interest from the waste rock. Ore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonne
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 |
Rio Tinto Group
Rio Tinto Group is an Anglo-Australian multinational company that is the world's second-largest metals and mining corporation (behind BHP). The company was founded in 1873 when of a group of investors purchased a mine complex on the Rio Tinto, in Huelva, Spain, from the Spanish government. It has grown through a long series of mergers and acquisitions. Although primarily focused on extraction of minerals, Rio Tinto also has significant operations in refining, particularly the refining of bauxite and iron ore. Rio Tinto has joint head offices in London (global and "plc") and Melbourne ("Limited" Australia).Suburbs & Postcodes " City of Melbourne. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striker Resources
Striker or The Strikers may refer to: People *A participant in a strike action *A participant in a hunger strike *Blacksmith's striker, a type of blacksmith's assistant *Striker's Independent Society, the oldest mystic krewe in America People with surname Striker * Eric Striker (born c. early 1990s), American football linebacker for the Oklahoma Sooners * Fran Striker (1903–1962), American writer for radio and comics * Gisela Striker (born 1943), professor of Philosophy and Classics at Harvard University * Jake Striker (1933–2013), former left-handed pitcher in Major League Baseball * Joseph Striker (1898–1974), American actor * Matt Striker (born 1974), WWE wrestler * "Mighty Striker", Trinidadian calypsonian Percival Oblington (1930–2011), also known simply as 'Striker' * Striker (gamer), handle of ''Overwatch'' player Kwon Nam-joo Entertainment and fiction * ''Striker'' (2010 film), a 2010 Hindi film * ''Striker'' (1987 film), a 1987 Italian war-action film * ''S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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