Mineralogy Database

Phillipsite-Na Mineral Data

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General Phillipsite-Na Information

Help on Chemical Formula: Chemical Formula: (Na,K,Ca)1-2(Si,Al)8O16•6(H2O)
Help on Composition: Composition: Molecular Weight = 649.86 gm
   Potassium   3.61 %  K     4.35 % K2O
   Sodium      3.18 %  Na    4.29 % Na2O
   Calcium     3.08 %  Ca    4.31 % CaO
   Aluminum   11.63 %  Al   21.97 % Al2O3
   Silicon    22.47 %  Si   48.08 % SiO2
   Hydrogen    1.86 %  H    16.63 % H2O
   Oxygen     54.16 %  O
             ______        ______ 
             100.00 %       99.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.9Ca0.5K0.6Si5.2Al2.8O16•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.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1825
Help on Locality: Locality: Aci Castello, on the slopes of Mount Etna, Sicily, Italy. 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. Na modifier added by zeolite nomenclature committee.
Help on Name Pronunciation: Name Pronunciation: Phillipsite-Na + Pronunciation Say PHILLIPSITE-NA
Help on Synonym: Synonym: Abrazite
  Cross stone
  Phillipsite