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Sodic-ferri-ferropedrizite Mineral Data
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General Sodic-ferri-ferropedrizite Information
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 Chemical Formula: |
NaLi2(Fe+++2Fe++3)Si8O22(OH)2 |
| Composition: |
Molecular Weight = 851.87 gm |
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Sodium 1.81 % Na 2.44 % Na2O |
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Lithium 1.96 % Li 4.21 % Li2O |
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Magnesium 2.71 % Mg 4.49 % MgO |
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Titanium 0.73 % Ti 1.22 % TiO2 |
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Manganese 0.45 % Mn 0.58 % MnO |
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Aluminum 0.67 % Al 1.26 % Al2O3 |
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Iron 19.93 % Fe 12.57 % FeO / 14.53 % Fe2O3 |
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Silicon 26.38 % Si 56.43 % SiO2 |
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Hydrogen 0.17 % H 1.53 % H2O |
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Oxygen 44.04 % O |
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Fluorine 1.16 % F 1.16 % F |
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- %
F -0.49 % -O=F2 |
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______ ______ |
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100.00 % 99.92 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.52Li1.82Na0.15Fe3+1.55Fe2+1.49Mg0.95Li0.58Al0.21Ti0.13Mn2+0.07Si8O22(OH)1.45F0.52 |
| Environment: |
Metamorphic episyenites (deslicification and albitizaton of a cordierite-bearing porphyritic granite). New Group 5 amphibole classification. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Pedriza Massif, Sierra del Guadarrama, Spain. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality and the Fe++ and Fe+++ clinoamphiboles. |
| Synonym: |
IMA2001-068 |
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