General Ferroferriwinchite Information Chemical Formula: |
CaNa(Fe++,Mg)4Fe+++[Si8O22](OH)2 |
Composition: |
Molecular Weight = 921.45 gm |
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Sodium 2.49 % Na 3.36 % Na2O |
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Calcium 4.35 % Ca 6.09 % CaO |
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Magnesium 2.64 % Mg 4.37 % MgO |
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Iron 24.24 % Fe 23.39 % FeO / 8.67 % Fe2O3 |
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Silicon 24.38 % Si 52.17 % SiO2 |
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Hydrogen 0.22 % H 1.96 % H2O |
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Oxygen 41.67 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CaNaFe2+3MgFe3+(Si8O22)(OH)2 |
IMA Status: |
Not Approved IMA |
Locality: |
Link to MinDat.org Location Data. |
Name Origin: |
Named for its composition and for Howard J. Winch, Geological survey of India. |
| | Search for Ferroferriwinchite Images
Images:
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| | Ferroferriwinchite Crystallography Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
| Optical Properties of Ferroferriwinchite Optical Data: |
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| Calculated Properties of Ferroferriwinchite Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEFerroferriwinchite = 8.76 barns/electron |
U=PEFerroferriwinchite x rElectron Density= . barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ferroferriwinchite is Not Radioactive | Ferroferriwinchite Classification Dana Class: |
66.01.03b.04 (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.01)with P=2 amphibole configuration |
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(66.01.03b)Group 3, the sodic-calcic amphiboles |
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Strunz Class: |
09.DE.20 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family |
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| Other Ferroferriwinchite Information References: |
NAME( Dana8) |
See Also: |
Links to other databases for Ferroferriwinchite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Ferroferriwinchite using: Visit our Advertisers for Ferroferriwinchite : A Bijoux Google Search for FerroferriwinchiteAdam's Minerals Google Search for Ferroferriwinchite Cape Minerals Google Search for Ferroferriwinchite Dakota Matrix Minerals Google Search for Ferroferriwinchite Excalibur Mineral Corp. Google Search for Ferroferriwinchite Exceptional Minerals Google Search for Ferroferriwinchite John Betts Fine Minerals Search for Ferroferriwinchite McDougall Minerals Google Search for Ferroferriwinchite Mineral News Website Link Rock and Mineral Shows Google Search for Ferroferriwinchite Weinrich Minerals, Inc. Google Search for Ferroferriwinchite Ask about Ferroferriwinchite here : Print or Cut-and-Paste your Ferroferriwinchite Specimen Label here :
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