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Potassium Magnesium Sulfate (other)
Potassium magnesium sulfate is a double salt that can crystallise in a number of forms that occur as minerals. * Langbeinite K2Mg2(SO4)3 * Leonite K2Mg(SO4)2·4H2O * Picromerite K2Mg(SO4)2·6H2O {{disambig Sulfates Magnesium compounds Potassium compounds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langbeinite
Langbeinite is a potassium magnesium sulfate mineral with the chemical formula K2Mg2(SO4)3. Langbeinite crystallizes in the isometric-tetartoidal (cubic) system as transparent colorless or white with pale tints of yellow to green and violet crystalline masses. It has a vitreous luster. The Mohs hardness is 3.5 to 4 and the specific gravity is 2.83. The crystals are piezoelectric. The mineral is an ore of potassium and occurs in marine evaporite deposits in association with carnallite, halite, and sylvite. It was first described in 1891 for an occurrence in Wilhelmshall, Halberstadt, Saxony-Anhalt, Germany, and named for A. Langbein of Leopoldshall, Germany. Langbeinite gives its name to the langbeinites, a family of substances with the same cubic structure, a tetrahedral anion, and large and small cations. Related substances include hydrated salts leonite (K2Mg(SO4)2·4H2O) and picromerite Picromerite (synonyms: schoenite, schönite) is a mineral from the class of hydrous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonite
Leonite is a hydrated double sulfate of magnesium and potassium. It has the formula K2SO4·MgSO4·4H2O. The mineral was named after Leo Strippelmann, who was director of the salt works at Westeregeln in Germany. The mineral is part of the blodite group of hydrated double sulfate minerals. Properties Leonite has a bitter taste. When leonite is analyzed for elements, it is usually contaminated with sodium and chloride ions, as it commonly occurs with sodium chloride. Crystal structure In the mineral family of leonite, the lattice contains sulfate tetrahedrons, a divalent element in an octahedral position surrounded by oxygen, and water and univalent metal (potassium) linking these other components together. One sulfate group is disordered at room temperature. The disordered sulfate becomes fixed in position as temperature is lowered. The crystal form also changes at lower temperatures, so two other crystalline forms of leonite exist at lower temperatures. The divalent meta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picromerite
Picromerite (synonyms: schoenite, schönite) is a mineral from the class of hydrous Sulfate minerals, sulfates lacking additional anions, and containing medium to large cations according to the Nickel–Strunz classification. Etymology The name comes from the Greek words πικρός [pikros] for "bitter" and μέρος [meros] for "part", and relates to the bitter taste of the mineral. Occurrence Picromerite is found on comparatively few places, currently (2015) only about 40 localities are known. It was first identified in active volcanic fumaroles on Mount Vesuvius by Arcangelo Scacchi in 1855 and has also been found in volcanic deposits on Mount Etna and on Hawaii (island), Hawai'i. It is more commonly found in the kainite zones of some marine salt deposits, among them salt mines in Thuringia, Lower Saxony and Saxony-Anhalt (Germany), near Hall in Tirol, Hallstatt and Bad Ischl (Austria), near Whitby (UK), and in the Carlsbad Potash District (New Mexico), also on salt la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfates
The sulfate or sulphate ion is a polyatomic A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zero. The term molecule may or may no ... anion with the empirical formula . Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salt (chemistry), salts of sulfuric acid and many are prepared from that acid. Spelling "Sulfate" is the spelling recommended by International Union of Pure and Applied Chemistry, IUPAC, but "sulphate" was traditionally used in British English. Structure The sulfate anion consists of a central sulfur atom surrounded by four equivalent oxygen atoms in a tetrahedron, tetrahedral arrangement. The symmetry is the same as that of methane. The sulfur atom is in the +6 oxidation state while the four oxygen atoms are each in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium Compounds
Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic table) it occurs naturally only in combination with other elements and it almost always has an oxidation state of +2. It reacts readily with air to form a thin passivation coating of magnesium oxide that inhibits further corrosion of the metal. The free metal burns with a brilliant-white light. The metal is obtained mainly by electrolysis of magnesium salts obtained from brine. It is less dense than aluminium and is used primarily as a component in strong and lightweight alloys that contain aluminium. In the cosmos, magnesium is produced in large, aging stars by the sequential addition of three helium nuclei to a carbon nucleus. When such stars explode as supernovas, much of the magnesium is expelled into the interstellar medium where it ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
