Mineralogy Database

Jeffreyite Mineral Data

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General Jeffreyite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Na)2(Be,Al)Si2(O,OH)7
Help on Composition: Composition: Molecular Weight = 255.30 gm
   Sodium      4.50 %  Na    6.07 % Na2O
   Calcium    23.55 %  Ca   32.95 % CaO
   Beryllium   2.65 %  Be    7.35 % BeO
   Aluminum    2.64 %  Al    4.99 % Al2O3
   Silicon    22.00 %  Si   47.07 % SiO2
   Hydrogen    0.79 %  H     7.06 % H2O
   Oxygen     43.87 %  O
             ______        ______ 
             100.00 %      105.48 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.5Na0.5Be0.75Al0.25Si2O5(OH)2
Help on Environment: Environment: In a cavity in a highly calcium-metasomatized granite dike.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Jeffrey mine, Asbestos, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Jeffreyite + Pronunciation Say JEFFREYITE
Help on Synonym: Synonym: IMA1982-075