Mineralogy Database

Makarochkinite Mineral Data

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General Makarochkinite Information

Help on Chemical  Formula: Chemical Formula: Ca2Fe++4Fe+++TiSi4BeAlO20
Help on Composition: Composition: Molecular Weight = 871.54 gm
   Sodium      0.66 %  Na    0.89 % Na2O
   Calcium     7.54 %  Ca   10.55 % CaO
   Magnesium   0.70 %  Mg    1.16 % MgO
   Tantalum    0.15 %  Ta    0.18 % Ta2O5
   Titanium    3.35 %  Ti    5.59 % TiO2
   Manganese   0.82 %  Mn    1.06 % MnO
   Beryllium   0.94 %  Be    2.61 % BeO
   Niobium     0.41 %  Nb    0.58 % Nb2O5
   Aluminum    1.67 %  Al    3.16 % Al2O3
   Iron       32.62 %  Fe   29.92 % FeO / 13.38 % Fe2O3
   Silicon    14.44 %  Si   30.89 % SiO2
   Oxygen     36.72 %  O
             ______        ______ 
             100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.64Na0.25Mn2+0.11Fe2+3.56Fe3+1.46Ti0.61Mg0.25Mn2+0.02Nb0.03Ta0.007Si4.48Be0.91 Al0.54Fe2+0.07O18O2
Help on Environment: Environment: Occurs in a granitic pegmatite near Lake Ishkul. Aenigmatite group. Ti analog of hogtuvaite.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Ilmen Mountains (Southern Urals), Ilmen State Reserve, Chelyabinsk Oblast, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Boris A. Makarochkin (1907-1988), Russian chemist and mineralogist, who studied the rare minerals from the Ilmen Mountains and collected the mineral, but described it as a n amphibole
Help on Synonym: Synonym: ICSD 39333
  IMA2002-009a
  PDF 85-1123