Mineralogy Database

Bertrandite Mineral Data

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General Bertrandite Information

Help on Chemical  Formula: Chemical Formula: Be4Si2O7(OH)2
Help on Composition: Composition: Molecular Weight = 238.23 gm
   Beryllium  15.13 %  Be   42.00 % BeO
   Silicon    23.58 %  Si   50.44 % SiO2
   Hydrogen    0.85 %  H     7.56 % H2O
   Oxygen     60.44 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Be4(Si2O7)(OH)2
Help on Environment: Environment: Commonly found in Be-bearing pegmatites and may be derived from the alteration of beryl.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1883
Help on Locality: Locality: Discovered at near Nantes, Loire-Inferieure, France. Also found at Irkutka and Altai Mountains, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the French mineralogist, E. Bertrand.
Help on Name Pronunciation: Name Pronunciation: Bertrandite + Pronunciation Say BERTRANDITE
Help on Synonym: Synonym: ICSD 202360
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