Mineralogy Database

Phillipsite-Ca Mineral Data

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General Phillipsite-Ca Information

Help on Chemical Formula: Chemical Formula: (Ca,K,Na)1-2(Si,Al)8O16•6(H2O)
Help on Composition: Composition: Molecular Weight = 658.41 gm
   Potassium   3.56 %  K     4.29 % K2O
   Sodium      1.40 %  Na    1.88 % Na2O
   Calcium     6.09 %  Ca    8.52 % CaO
   Aluminum   11.47 %  Al   21.68 % Al2O3
   Silicon    22.18 %  Si   47.45 % SiO2
   Hydrogen    1.84 %  H    16.42 % H2O
   Oxygen     53.46 %  O
             ______        ______ 
             100.00 %      100.24 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaK0.6Na0.4Si5.2Al2.8O16•6(H2O)
Help on Environment: Environment: Common zeolite in volcanic rocks, ore veins, diagenetically altered rhyolitic vitric tuffs, saline lake deposits, and ocean floor sediments. Shows solid solution toward harmotome.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Lower Salt Lake Tuff, Puuloa Road near junction with Moanalua Road, Oahu, Hawaii. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after William Phillips (1775-1829), English mineralogist and founder of the Geological Society of London. The Ca-dominant member of the phillipsite series.
Help on Name Pronunciation: Name Pronunciation: Phillipsite-Ca + Pronunciation Say PHILLIPSITE-CA
Help on Synonym: Synonym: Abrazite
  Cross stone
  Wellsite-barian Phillipsite-Ca