Mineralogy Database

Potassic-magnesiosadanagaite Mineral Data

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General Potassic-magnesiosadanagaite Information

Help on Chemical  Formula: Chemical Formula: (K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2
Help on Composition: Composition: Molecular Weight = 900.44 gm
   Potassium   3.26 %  K     3.92 % K2O
   Sodium      0.64 %  Na    0.86 % Na2O
   Calcium     8.90 %  Ca   12.46 % CaO
   Magnesium   6.75 %  Mg   11.19 % MgO
   Titanium    1.33 %  Ti    2.22 % TiO2
   Aluminum    8.24 %  Al   15.57 % Al2O3
   Iron        9.30 %  Fe   11.97 % FeO
   Silicon    18.71 %  Si   40.04 % SiO2
   Hydrogen    0.22 %  H     2.00 % H2O
   Oxygen     42.64 %  O
             ______        ______ 
             100.00 %      100.22 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.75Na0.25Ca2Mg2.5Fe2+1.5Al0.75Ti0.25(Si6Al2O22)(OH)2
Help on Environment: Environment: Banded skarns and recrystallized limestones. Original magnesiosadanagaite (IMA1982-102) was ranamed potassic-magnesiosadanagaite by IMA amphibole nomenclature committee.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Myojin Island, Ehime Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Help on Synonym: Synonym: IMA1982-102
  Magnesiosadanagaite - 1982