Mineralogy Database

Boralsilite Mineral Data

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General Boralsilite Information

Help on Chemical Formula: Chemical Formula: Al16B6Si2O27
Help on Composition: Composition: Molecular Weight = 1,144.71 gm
   Aluminum  37.71 %  Al   71.26 % Al2O3
   Silicon    4.91 %  Si   10.50 % SiO2
   Boron      5.67 %  B    18.25 % B2O3
   Oxygen    51.71 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al16B6Si2O37
Help on Environment: Environment: Found in a tourmaline - quartz intergrowth in granitic pegmatite cutting granulite-facies metapelitic rocks, Structurally related to sillimanite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Stornes Peninsula, Larsemann Hills, Prydz Bay, east Antarctica. Almgjotheii in the aureole of the Rogaland intrusive complex, southwestern Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition of (bor}on, (al)uminum, and (sil)icon.
Help on Name Pronunciation: Name Pronunciation: Boralsilite + Pronunciation Say BORALSILITE
Help on Synonym: Synonym: ICSD 87662
  IMA1996-029
  PDF 51-1451