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Sodic-ferripedrizite Mineral Data
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General Sodic-ferripedrizite Information
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 Chemical Formula: |
Na(LiNa)(Fe+++2Mg2Li)Si8O22(OH,F)2 |
| Composition: |
Molecular Weight = 811.31 gm |
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Potassium 0.14 % K 0.17 % K2O |
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Sodium 3.63 % Na 4.89 % Na2O |
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Lithium 1.90 % Li 4.09 % Li2O |
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Calcium 0.40 % Ca 0.55 % CaO |
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Magnesium 5.24 % Mg 8.69 % MgO |
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Titanium 0.65 % Ti 1.08 % TiO2 |
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Manganese 0.47 % Mn 0.61 % MnO |
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Aluminum 0.70 % Al 1.32 % Al2O3 |
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Zinc 0.08 % Zn 0.10 % ZnO |
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Iron 11.36 % Fe 16.24 % Fe2O3 |
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Silicon 27.69 % Si 59.25 % SiO2 |
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Hydrogen 0.17 % H 1.50 % H2O |
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Oxygen 46.05 % O |
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Fluorine 1.52 % F 1.52 % F |
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- %
F -0.64 % -O=F2 |
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______ ______ |
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100.00 % 99.38 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.7K0.03Li1.34Na0.58Ca0.08Mg1.75Fe3+1.65Li0.88Al0.21Ti0.11Mn2+0.07Zn0.01Si8O22
(OH)1.35F0.65 |
| Environment: |
In hydrothermal episyenites formed after cordierite-bearing porphyritic granites. A member of the amphibole group. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
In the Arroyo de la Yedra, Eastern Pedriza Massif, Sierra de Guadarrama, Central System, Spain. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality and the prefixes "ferri" and "sodic" as recommended by the amphibole commission. |
| Synonym: |
ICSD 89815 |
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IMA1998-061 |
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