Mineralogy Database

Ternesite Mineral Data

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General Ternesite Information

Help on Chemical  Formula: Chemical Formula: Ca5(SiO4)2SO4
Help on Composition: Composition: Molecular Weight = 480.62 gm
   Calcium  41.69 %  Ca   58.34 % CaO
   Silicon  11.69 %  Si   25.00 % SiO2
   Sulfur    6.67 %  S    16.66 % SO3
   Oxygen   39.95 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(SiO4)2(SO4)
Help on Environment: Environment: In calcium-rich xenoliths in leucite tephrite lava.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: The Ettringer Bellerberg, near Mayen, Eifel, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Mr. B. Ternes of Mayen, Germany, who found the mineral and provided specimens for the study.
Help on Name Pronunciation: Name Pronunciation: Ternesite + Pronunciation Say TERNESITE
Help on Synonym: Synonym: ICSD 85123
  PDF 49-1807