Mineralogy Database

Gismondine Mineral Data

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General Gismondine Information

Help on Chemical  Formula: Chemical Formula: Ca2Al4Si4O16•9(H2O)
Help on Composition: Composition: Molecular Weight = 718.55 gm
   Calcium   11.16 %  Ca   15.61 % CaO
   Aluminum  15.02 %  Al   28.38 % Al2O3
   Silicon   15.63 %  Si   33.45 % SiO2
   Hydrogen   2.52 %  H    22.56 % H2O
   Oxygen    55.67 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Al4Si4O16•9(H2O)
Help on Environment: Environment: Alteration product of plagioclase.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1817
Help on Locality: Locality: Capo di Bove, near Rome, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Italian mineralogist, Carlo Giuseppe Gismondi (1762-1824), lecturer in Mineralogy in Rome.
Help on Name Pronunciation: Name Pronunciation: Gismondine + Pronunciation Say GISMONDINE
Help on Synonym: Synonym: Abrazite
  Aricite
  Gismondite
  ICSD 61439
  PDF 39-1373
  Zeagonite