Substance name : MUSCOVITE Product code : SIM6594.9 Formula : K2O∙3Al2O3∙6SiO2∙2H2O Synonyms : POTASSIUM MICA Chemical family : INORGANIC SILICATE 1.2. In this formula potassium is sometimes replaced by other ions with a single positive charge such as sodium, rubidium, or cesium. Muscovite is a potassium-rich mica with the following generalized composition… KAl 2 (AlSi 3 O 10)(OH) 2. A green to colorless, Ba-bearing variety of muscovite intermediate in chemical composition between true mica and brittle mica. Muscovite Chemical Composition. Persbergite: Muscovite pseudomorphous after nepheline. Phengite: Phengite is an aluminous true mica which contains a relatively high amount of tetrahedrally co-ordinated Si (>3.1 apfu). Muscovite (also known as common mica, isinglass, or potash mica) is a hydrated phyllosilicate mineral of aluminium and potassium with formula KAl2(AlSi3O10)(F,OH)2, or (KF)2(Al2O3)3(SiO2)6(H2O). Trivalent chromium replaces one of the aluminium (Al) atoms in the general muscovite formula producing the apple green hue distinctive of … Relevant identified uses of the substance or mixture and uses advised against Use of the substance/mixture : Chemical intermediate For research and industrial use only 1.3. Chromium rich variety of the mineral muscovite, belonging to the mica group of phyllosilicate minerals, with the following formula: K(Al,Cr) 2 (AlSi 3 O 10 )(OH) 2. It has a highly perfect basal cleavage yielding remarkably thin laminae (sheets) which are often highly e