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Friedrichbeckeite Mineral Data
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General Friedrichbeckeite Information
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 Chemical Formula: |
K([ ],Na)Mg2(Be2Mg)Si12O30 |
| Composition: |
Molecular Weight = 982.67 gm |
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Potassium 3.46 % K 4.17 % K2O |
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Sodium 2.01 % Na 2.71 % Na2O |
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Magnesium 6.78 % Mg 11.24 % MgO |
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Manganese 1.57 % Mn 2.02 % MnO |
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Beryllium 1.68 % Be 4.66 % BeO |
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Iron 1.36 % Fe 1.75 % FeO |
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Silicon 34.30 % Si 73.37 % SiO2 |
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Oxygen 48.84 % O |
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______ ______ |
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100.00 % 99.93 % = TOTAL OXIDE |
| Empirical Formula: |
K0.87Na0.86Mg1.57Mn2+0.28Fe2+0.24Be1.83Mg1.17Si12O30 |
| Environment: |
Found in a single silicate-rich xenolith in volcanic rocks. Milarite group. Mg-dominant analogue of almarudite, milarite or oftedalite. |
| IMA Status: |
Approved IMA 2008 (Dana # Added) |
| Locality: |
Bellerberg, Ettringen, Eifel, Germany Link to MinDat.org Location Data. |
| Name Origin: |
Named for Friedrich Johann Karl Becke (1855-1931), Austrian mineralogist and petrographer. |
| Name Pronunciation: |
Friedrichbeckeite + Pronunciation  |
| Synonym: |
IMA2008-019 |
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