Mineralogy Database

Ephesite Mineral Data

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General Ephesite Information

Help on Chemical  Formula: Chemical Formula: NaLiAl2(Al2Si2)O10(OH)2
Help on Composition: Composition: Molecular Weight = 388.04 gm
   Sodium     5.92 %  Na    7.99 % Na2O
   Lithium    1.79 %  Li    3.85 % Li2O
   Aluminum  27.81 %  Al   52.55 % Al2O3
   Silicon   14.48 %  Si   30.97 % SiO2
   Hydrogen   0.52 %  H     4.64 % H2O
   Oxygen    49.48 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaLiAl4Si2O10(OH)2
Help on Environment: Environment: Peri-aluminous metamorphic rocks. Ca analog of muscovite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1851
Help on Locality: Locality: Gumuchdahg, Ephesus, near Izmir, Turkey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Name Pronunciation: Name Pronunciation: Ephesite Say EPHESITE