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Barite
A mineral with chemical composition BaSO4. It is isostructural with celestite, SrSO4, and anglesite, PbSO4. Barite is orthorhombic, space group Pnma, a = 0.887 nanometer, b = 0.545 nm, c = 0.714 nm. The illustration shows typical crystals. Barite…
Biography
Barkla, Charles Glover (1877–1944)
Biography
Bascom, Florence (1862–1945)
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Bassi, Laura (1711–1778)
Article
Bauxite
The primary ore used to produce aluminum metal and alumina (Al2O3). Bauxite (see illustration) is a naturally occurring weathering product composed of one or more aluminum hydroxide minerals, such as gibbsite [Al(OH)3], boehmite [AlO(OH)], and…
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Beaufort, Francis (1774–1857)
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Becquerel, (Antoine) Henri (1852–1908)
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Bernoulli, Daniel (1700–1782)
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Bernstein, Jeremy (1929– )
Article
Beryl
The most common beryllium mineral. Beryl, Al2[Be3Si6O18], crystallizes in the hexagonal system with space group P6/mcc. The crystal structure consists of six-membered rings of corner-sharing silicon-oxygen (SiO4) tetrahedra cross-linked by…
Article
Beryllium minerals
Minerals containing beryllium as an essential component. Over 50 beryllium minerals (Fig. 1) have been identified, even though beryllium is a scarce element in the Earth's crust. The unusual combination of low charge (+2) and small ionic radius…
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Bethe, Hans Albrecht (1906–2005)
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Bhabha, Homi Jehangir (1909–1966)
Article
Biotite
An iron-magnesium-rich layer silicate; it is also known as black mica. Biotite (see illustration) is the most abundant of the mica group of minerals. The name is derived from that of the French chemist J. Biot. The formula for the ideal end member,…
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Bjerknes, Vilhelm Firman Koren (1862–1951)
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Black, Joseph (1728–1799)
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Blackett, Patrick Maynard Stuart (1897–1974)
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Bohr, Mottelson, and Rainwater, Aage Niels Bohr (1922–2009), Ben Roy Mottelson (1926– ) and (Leo) James Rainwater (1917–1986)
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Bohr, Niels Henrik David (1885–1962)
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Boltzmann, Ludwig Eduard (1844–1906)
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Born, Max (1882–1970)
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Boucher de Crèvecoeur de Perthes, Jacques (1788–1868)
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Bowden, Frank Philip (1903–1968)
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