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El Ali Meteorite
The El Ali meteorite (also known as Nightfall) is a 15.2 ton (16,800 kg) meteorite that was known to the local population in Somalia for generations, but first scientifically identified in 2020. Discovery and identification El Ali was found in a limestone valley 15 kilometres north of El Ali at GPS location 4°17.281’N, 44°53.893’E on September 2020. Local pastoralists were aware of the rock for between five and seven generations, and it featured in songs, folklore, dances, and poems. The meteorite was brought to the attention of the international community by Kureym Mining and Rocks Company's staff who were prospecting for opals in the area. They identified the rock and started moving it to Mogadishu before the Somalia government intervened. It is an IAB meteorite. Mineral identification In 2022, scientists from the University of Alberta identified two new minerals ( elaliite and elkinstantonite) in a 70 gram piece of the meteorite. The minerals were identified by And ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate energy. It then becomes a meteor and forms a Meteoroid#Fireball, fireball, also known as a shooting star; astronomers call the brightest examples "Bolide#Astronomy, bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater. Meteorites that are recovered after being observed as they transit the atmosphere and Impact event, impact the Earth are called meteorite falls. All others are known as meteorite finds. Meteorites have traditiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Ali
El Ali ( so, Ceel Cali, ar, عيل علي, ʿAyl ʿAliyy) is a District in the central Hiran region of Somalia. El Ali has a population of around 500'000 inhabitants. The broader El Ali District has a total population of 543,345 residents. El Ali means (Ali's well). 99% of El-Ali's residents belong to the Galje'el Subclan of Dirisame. History The El Ali meteorite was identified by Kureym Mining and Rocks Company's staff in 2020 and trucked towards Mogadishu. Prior to that, the rock had been celebrated for between five and seven generations, featuring in songs, folklore, dances, and poems. In 2022, the mineral elaliite was named after El Ali after being identified in the meteorite by scientists at the University of Alberta The University of Alberta, also known as U of A or UAlberta, is a public research university located in Edmonton, Alberta, Canada. It was founded in 1908 by Alexander Cameron Rutherford,"A Gentleman of Strathcona – Alexander Cameron Rutherfor ....Gl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opals
Optical Payload for Lasercomm Science (OPALS) is a spacecraft communication instrument developed at the Jet Propulsion Laboratory that was tested on the International Space Station (ISS) from 18 April 2014 to 17 July 2014 to demonstrate the technology for laser communications systems between spacecraft and ground stations. The purpose of OPALS is to do research into replacing traditional radio-frequency (RF) communications which are currently used on spacecraft. This will allow spacecraft to increase the rate at which data is downlinked by 10 to 100 times. It also will have less error than RF communication. It launched from Cape Canaveral to the ISS on 18 April 2014 on a Falcon 9 SpaceX CRS-3 Dragon capsule resupply. The experiment used commercial products rather than space qualified components. Science objectives The goal of the OPALS mission was to demonstrate a downlink of a short video from space using laser communication. In doing so, the following was studied: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mogadishu
Mogadishu (, also ; so, Muqdisho or ; ar, مقديشو ; it, Mogadiscio ), locally known as Xamar or Hamar, is the capital and List of cities in Somalia by population, most populous city of Somalia. The city has served as an important port connecting traders across the Indian Ocean for millennia, and has an estimated population of 2,388,000 (2021). Mogadishu is located in the coastal Banadir region on the Indian Ocean, which unlike other Somali regions, is considered a municipality rather than a (federal state). Mogadishu has a long history, which ranges from the Ancient history, ancient period up until the present, serving as the capital of the Sultanate of Mogadishu in the 9th-13th century, which for many centuries controlled the Indian Ocean gold trade, and eventually came under the Ajuran Empire in the 13th century which was an important player in the medieval Silk Road maritime trade. Mogadishu enjoyed the height of its prosperity during the 14th and 15th centuries a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IAB Meteorite
IAB meteorites are a group of iron meteorites according to their overall composition and a group of primitive achondrites because of silicate inclusions that show a strong affinity to winonaites and chondrites. Description The IAB meteorites are composed of meteoric iron ( kamacite and taenite) and silicate inclusions. Structurally they can be hexahedrites, fine to coarse octahedrites, or even ataxites. Most of them are octahedrite with medium to coarse taenite-lamella and distinct Widmanstätten patterning. The silicate inclusions are composed of low-Ca pyroxene, high-Ca pyroxene, olivine, plagioclase, troilite, graphite, different phosphates, meteoric iron and traces of daubréelite and chromite Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of FeCr2O4. It is an oxide mineral belonging to the spinel group. The element magnesium can s .... This composition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Alberta
The University of Alberta, also known as U of A or UAlberta, is a public research university located in Edmonton, Alberta, Canada. It was founded in 1908 by Alexander Cameron Rutherford,"A Gentleman of Strathcona – Alexander Cameron Rutherford", Douglas R. Babcock, 1989, The University of Calgary Press, 2500 University Drive NW, Calgary, Alberta, Canada, the first premier of Alberta, and Henry Marshall Tory,"Henry Marshall Tory, A Biography", originally published 1954, current edition January 1992, E.A. Corbett, Toronto: Ryerson Press, the university's first president. It was enabled through the Post-secondary Learning Act''.'' The university is considered a "comprehensive academic and research university" (CARU), which means that it offers a range of academic and professional programs that generally lead to undergraduate and graduate level credentials. The university comprises four campuses in Edmonton, an Augustana Campus in Camrose, and a staff centre in downtown Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elaliite
Elaliite is a mineral with formula (or ) that was first synthesized in a laboratory in the 1980s and later identified in natural material in 2022 at which time the official mineral designation was given. The mineral is orthorhombic, with space group Cmmm (space group 65). History Elaliite was first identified in nature by scientists from the University of Alberta who were given a 70 gram piece of the 15-ton El Ali meteorite that came to the attention of the scientific community in 2020. Elaliite was named after the El Ali district in Somalia where the meteorite was found. The mineral was identified by Andrew Locock who is employed by the university as the head of its electron microprobe laboratory, and classified by geologist Chris Herd. Locock also identified the first natural specimen of elkinstantonite in the same sample. Synthetic versions of elaliite were produced in a French laboratory in the 1980s but could not be categorised as a ''mineral In geology and miner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elkinstantonite
Elkinstantonite is a mineral with formula that was first generated in a laboratory in the 1980s and first identified from natural origins in 2022, when the official mineral designation was also given. It is monoclinic, with space group P21''/c'' (space group 14). History Elkinstantonite was first identified in nature by scientists from the University of Alberta who were given a 70-gram piece of an ancient 15-ton El Ali meteorite that landed in Somalia and was first noticed by the international scientific community in 2020. Elkinstantonite was named after NASA scientist Lindy Elkins-Tanton. The mineral was identified by Andrew Locock who is employed by the university as the head of its electron microprobe An electron microprobe (EMP), also known as an electron probe microanalyzer (EPMA) or electron micro probe analyzer (EMPA), is an analytical tool used to non-destructively determine the chemical composition of small volumes of solid materials. It ... laboratory, and classi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Microprobe
An electron microprobe (EMP), also known as an electron probe microanalyzer (EPMA) or electron micro probe analyzer (EMPA), is an analytical tool used to non-destructively determine the chemical composition of small volumes of solid materials. It works similarly to a scanning electron microscope: the sample is bombarded with an electron beam, emitting x-rays at wavelengths characteristic to the elements being analyzed. This enables the abundances of elements present within small sample volumes (typically 10-30 cubic micrometers or less) to be determined,Wittry, David B. (1958). "Electron Probe Microanalyzer"US Patent No 2916621 Washington, DC: U.S. Patent and Trademark Office when a conventional accelerating voltage of 15-20 kV is used. The concentrations of elements from lithium to plutonium may be measured at levels as low as 100 parts per million (ppm), material dependent, although with care, levels below 10 ppm are possible. The ability to quantify lithium by EPMA became a real ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Mineralogical Association
Founded in 1958, the International Mineralogical Association (IMA) is an international group of 40 national societies. The goal is to promote the science of mineralogy and to standardize the nomenclature of the 5000 plus known mineral species. The IMA is affiliated with the International Union of Geological Sciences (IUGS). The Association supports the activities of Commissions and Working Groups involved on certain aspects of mineralogical practice and facilitates interactions among mineralogists by sponsoring and organising meetings. In particular, the IMA holds its general meeting every four years. The next meeting is scheduled in 2022 in Lyon, France. Presidents The presidents of the IMA have been: * since 2021: Anhuai Lu ** Peking University *2018–2020: Patrick Cordier (born 1961) ** Université de Lille *2016–2018: Peter C. Burns ** University of Notre Dame *2014–2016: Sergey V. Krivovichev (born 1972) ** Saint Petersburg State University *2012–2014: Walter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mineral
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2011): Minerals'; p. 1. In the series ''Geology: Landforms, Minerals, and Rocks''. Rosen Publishing Group. The geological definition of mineral normally excludes compounds that occur only in living organisms. However, some minerals are often biogenic (such as calcite) or are organic compounds in the sense of chemistry (such as mellite). Moreover, living organisms often synthesize inorganic minerals (such as hydroxylapatite) that also occur in rocks. The concept of mineral is distinct from rock, which is any bulk solid geologic material that is relatively homogeneous at a large enough scale. A rock may consist of one type of mineral, or may be an aggregate of two or more different types of minerals, spacially segregated into distinct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Arizona
The University of Arizona (Arizona, U of A, UArizona, or UA) is a public land-grant research university in Tucson, Arizona. Founded in 1885 by the 13th Arizona Territorial Legislature, it was the first university in the Arizona Territory. The university is part of the Association of American Universities and the Universities Research Association. In the former, it is the only member from the state of Arizona. The university is classified among "R1: Doctoral Universities – Very High Research Activity". The University of Arizona is one of three universities governed by the Arizona Board of Regents. , the university enrolled 49,471 students in 19 separate colleges/schools, including the University of Arizona College of Medicine in Tucson and Phoenix and the James E. Rogers College of Law, and is affiliated with two academic medical centers ( Banner – University Medical Center Tucson and Banner – University Medical Center Phoenix). In 2021, University of Arizona acquired ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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