Mineralogy Database

Calcybeborosilite-(Y) Mineral Data

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General Calcybeborosilite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (REE,Ca)2[ ](B,Be)2(SiO4)2(OH,O)2
Help on Composition: Composition: Molecular Weight = 437.09 gm
   Calcium           9.17 %  Ca   12.83 % CaO
   La,Ce,Pr,Nd,Sm,  32.95 %  RE   38.44 % REE2O3
   Beryllium         1.24 %  Be    3.43 % BeO
   Iron              3.83 %  Fe    4.93 % FeO
   Silicon          12.85 %  Si   27.49 % SiO2
   Boron             2.97 %  B     9.56 % B2O3
   Hydrogen          0.32 %  H     2.89 % H2O
   Oxygen           36.24 %  O
   Fluorine          0.43 %  F     0.43 % F
                      -   %   F    -0.18 % -O=F2    
                   ______        ______ 
                   100.00 %       99.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: REECaFe2+0.3B1.2Be0.6Si2O8.5(OH)1.4F0.1
Help on Environment: Environment: Paleozoic alkaline granites intruding Silurian-aged rocks with a high content of boron. Probable intermediate composition between dataolite and hingginite-(Ce).
Help on IMA Status: IMA Status: Not Approved IMA 1963 (Dana # Added)
Help on Locality: Locality: Dara-i-Pioz massif on the southern slope of the Altai Range in Tajikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's composition of calcium, beryllium, boron and silicon.
Help on Synonym: Synonym: Calcybeborosilite
  Yttrian Datolite