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Ellendale Diamond Field
The Ellendale Diamond Field is a cluster of lamproite intrusions located 125 km ESE of Derby within the WNW trending Lennard Shelf to the south of the Kimberley Block in the West Kimberley, West Kimberly region of Australia. The Ellendale diamond field was once the source of up to 50% of the worlds supply of Fancy Yellow diamonds. Ellendale's volcanic pipes intruded during the Miocene age between 22 and 19 Ma and nearly 48 lamproites have been mapped within the NW trending 1500 square kilometre (60 x 25 km) field. More than 100 lamproite intrusions are known over a wider 7500 km2 area surrounding the Ellendale swarm. Some 45 of the Ellendale intrusives are volcanic crater deposits, while 3 are classed as volcanic sills. The lamproites are either leucite or olivine rich, with 60% being diamondiferous. The first Ellendale pipe was identified in 1976 with diamonds mostly mined from 2 open pit hard rock mines at the Ellendale 4 (E4) and Ellendale 9 (E9) lamprorite pipes. Alth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellendale Diamond Field Location
Ellendale may refer to: ;United States * Ellendale, Delaware * Ellendale, Minnesota * Ellendale, North Carolina * Ellendale, North Dakota * Ellendale, Oregon * Ellendale, Tennessee ;Australia * Ellendale, Tasmania * Alternative name for the Day Cottage {{geodis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamproite
Lamproite is an ultrapotassic mantle-derived volcanic or subvolcanic rock. It has low CaO, Al2O3, Na2O, high K2O/Al2O3, a relatively high MgO content and extreme enrichment in incompatible elements. Lamproites are geographically widespread yet are volumetrically insignificant. Unlike kimberlites, which are found exclusively in Archaean cratons, lamproites are found in terrains of varying age, ranging from Archaean in Western Australia, to Palaeozoic and Mesozoic in southern Spain. They also vary widely in age, from Proterozoic to Pleistocene, the youngest known example from Gaussberg in Antarctica being 56,000 ± 5,000 years old. Lamproite volcanology is varied, with both diatreme styles and cinder cone or cone edifices known. Petrology Lamproites form from partially melted mantle at depths exceeding 150 km. The molten material is forced to the surface in volcanic pipes, bringing with it xenoliths and diamonds from the harzburgitic peridotite or eclogite mantle regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Kimberley
West Kimberley is a sub region of the Kimberley region of Western Australia. The region is defined according to different purposes. The area has been listed as a heritage area. Related to the heritage listing, the area has had portions that have been omitted due to extant mining leases. The name is also included in the current local government name of Shire of Derby-West Kimberley Shire is a traditional term for an administrative division of land in Great Britain and some other English-speaking countries such as Australia and New Zealand. It is generally synonymous with county. It was first used in Wessex from the beginn ..., which was known earlier as the West Kimberley Road Board. References {{WesternAustralia-geo-stub Kimberley (Western Australia) Australian National Heritage List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ELLENDALE FANCY YELLOW- IBDH
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Ellendale may refer to: ;United States * Ellendale, Delaware * Ellendale, Minnesota * Ellendale, North Carolina * Ellendale, North Dakota * Ellendale, Oregon * Ellendale, Tennessee ;Australia * Ellendale, Tasmania * Alternative name for the Day Cottage Day Cottage, also referred to as Ellendale, is a State Register of Heritage Places-listed Victorian-style cottage in East Rockingham, Western Australia. The cottage is part of the East Rockingham Heritage Precinct. History Prior to the constru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
E4 Abandoned
E4, E.IV or E-4 may refer to: Entertainment * E4 (TV channel), a digital television channel in the United Kingdom and Ireland * ''Every Extend Extra Extreme'', a video game from Q Entertainment * Entertainment for All, a video game expo Transportation * Aero Asia International, an airline, by IATA code Roads * European route E4, a road through Finland and Sweden * E4 European long distance path, a European long-distance trail * Tōhoku Expressway, route E4 in Japan * E4 expressway (Pakistan) * South Kedah Expressway in Malaysia * Subic Freeport Expressway in the Philippines Trains * E4 Series Shinkansen, a Japanese high-speed train * CNW Class E-4, a 4-6-4 steam locomotive of the Chicago & Northwestern Railway * EMC E4, a diesel locomotive * LB&SCR E4 class, a steam locomotive of the London, Brighton & South Coast Railway * LNER E4 Class, a 2-4-0 steam locomotive built by the Great Eastern Railway and operated by the LNER Military * Boeing E-4, a U.S. military flying command ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimberlite
Kimberlite is an igneous rock and a rare variant of peridotite. It is most commonly known to be the main host matrix for diamonds. It is named after the town of Kimberley in South Africa, where the discovery of an diamond called the Star of South Africa in 1869 spawned a diamond rush and the digging of the open-pit mine called the Big Hole. Previously, the term kimberlite has been applied to olivine lamproites as Kimberlite II, however this has been in error. Kimberlite occurs in the Earth's crust in vertical structures known as kimberlite pipes, as well as igneous dykes. Kimberlite also occurs as horizontal sills. Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within the mantle. Formation occurs at depths between , potentially from anomalously enriched exotic mantle compositions, and they are erupted rapidly and violently, often with considerable carbon dioxide and other volatile componen ... [...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] |
Fancy Colored Rough Diamonds Ellendale
Fancy may refer to: Places * Fancy, Saint Vincent and the Grenadines, a settlement * Fancy River, Saint Vincent and the Grenadines Music Albums * ''Fancy'' (Bobbie Gentry album), 1970 * ''Fancy'' (Idiot Flesh album), 1997 * ''Fancy'' (video), a 2007 video album by Les Claypool Songs * "Fancy" (Bobbie Gentry song), 1969, covered by Reba McEntire in 1990 * "Fancy" (Destiny's Child song), 2001 * "Fancy" (Drake song), 2010 * "Fancy" (Iggy Azalea song), 2014 * "Fancy" (Doja Cat song), 2018 * "Fancy" (Twice song), 2019 Other music * Fantasia (music), also known as fancy, a type of musical composition * Fancy (band), an early-mid 1970s pop group * Fancy (singer) (born 1946), German Eurodance and Euro Disco artist Characters * Arthur Fancy, on the TV series ''NYPD Blue'' * Fancy Crane, on the soap opera ''Passions'' * Fancy-Fancy, a character in the animated sitcom series ''Top Cat'' * Fancy Lala, the main character from the Japanese anime series of the same name * 'Fancy' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India Bore Violet Fluorescence 2
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations average to between 73–55 ka.", "Modern human beings—''Homo sapiens''—originated in Africa. Then, interm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
