Mineralogy Database

Dingdaohengite-(Ce) Mineral Data

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General Dingdaohengite-(Ce) Information

Help on Chemical Formula: Chemical Formula: (Ce,La)4Fe++(Ti,Fe++,Mg,Fe+++)2Ti2Si4O22
Help on Composition: Composition: Molecular Weight = 1,237.85 gm
   Calcium     1.55 %  Ca    2.17 % CaO
   Lanthanum  16.72 %  La   19.61 % La2O3
   Cerium     24.11 %  Ce   28.24 % Ce2O3
   Thorium     0.19 %  Th    0.21 % ThO2
   Magnesium   0.81 %  Mg    1.33 % MgO
   Titanium   10.99 %  Ti   18.33 % TiO2
   Niobium     0.30 %  Nb    0.43 % Nb2O5
   Aluminum    0.02 %  Al    0.04 % Al2O3
   Iron        7.81 %  Fe    8.53 % FeO /  1.68 % Fe2O3
   Silicon     9.08 %  Si   19.42 % SiO2
   Oxygen     28.44 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce2.13La1.49Ca0.48Th0.01Fe2+Ti0.88Fe2+0.47Mg0.41Fe3+0.26Al0.01Ti1.96Nb0.04(Si2O7)2O8
Help on Environment: Environment: Occurs in the magnesian skarn in the excontact of granite within dolomitic marble. Chevkinite group (pseudo-C2/m).
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Bayun Obo iron mine, Inner Mongolia, China Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ding Daoheng (1899-1955), who made the first discovery of the world-famous Bayan Obo REE-Nb-Fe ore deposit in 1927.
Help on Synonym: Synonym: IMA2005-014