Mineralogy Database

Magnesiochloritoid Mineral Data

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General Magnesiochloritoid Information

Help on Chemical  Formula: Chemical Formula: MgAl2SiO5(OH)2
Help on Composition: Composition: Molecular Weight = 220.37 gm
   Magnesium  11.03 %  Mg   18.29 % MgO
   Aluminum   24.49 %  Al   46.27 % Al2O3
   Silicon    12.74 %  Si   27.27 % SiO2
   Hydrogen    0.91 %  H     8.18 % H2O
   Oxygen     50.82 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgAl2SiO5(OH)2
Help on Environment: Environment: In metapelites and related rocks within high-grade blueschist rocks; stable under metamorphic conditions of near 500 �C and 18 kbar.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Monte Rosa massif, near the Ghiacciaio di Verra; in the Val d'Ayas, Italy, near the border with Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for magnesium in its composition and its relation to chloritoid.
Help on Synonym: Synonym: Sismondine