General Ferro-eckermannite Information Chemical Formula: |
NaNa2(Fe++4Al)Si8O22(OH)2 |
Composition: |
Molecular Weight = 930.02 gm |
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Sodium 7.42 % Na 10.00 % Na2O |
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Aluminum 2.90 % Al 5.48 % Al2O3 |
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Iron 24.02 % Fe 30.90 % FeO |
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Silicon 24.16 % Si 51.68 % SiO2 |
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Hydrogen 0.22 % H 1.94 % H2O |
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Oxygen 41.29 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Na3Fe2+4Al(Si8O22)(OH)2 |
IMA Status: |
Approved IMA 1964 |
Locality: |
Link to MinDat.org Location Data. |
Name Origin: |
Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883). |
| | Ferro-eckermannite Image
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Ferro-eckermannite Crystallography Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
| Physical Properties of Ferro-eckermannite Color: |
Green. |
Hardness: |
5-6 - Between Apatite and Orthoclase |
| Optical Properties of Ferro-eckermannite Optical Data: |
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| Calculated Properties of Ferro-eckermannite Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEFerro-eckermannite = 8.26 barns/electron |
U=PEFerro-eckermannite x rElectron Density= . barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ferro-eckermannite is Not Radioactive | Ferro-eckermannite Classification Dana Class: |
66.01.03c.07 (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.01)with P=2 amphibole configuration |
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(66.01.03c)Group 4, the sodic amphiboles |
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Strunz Class: |
09.DE.25 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 Ferro-eckermannite Information References: |
PHYS. PROP.(List of New Min. Names,28-33th,1974-1984) |
See Also: |
Links to other databases for Ferro-eckermannite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - GeoScienceWorld 5 - Google Images 6 - Google Scholar 7 - MinDAT 8 - Mineralienatlas (Deutsch) 9 - Online Mineral Museum 10 - QUT Mineral Atlas 11 - Ruff.Info Search for Ferro-eckermannite using: Visit our Advertisers for Ferro-eckermannite : A Bijoux Google Search for Ferro-eckermanniteAdam's Minerals Google Search for Ferro-eckermannite Cape Minerals Google Search for Ferro-eckermannite Dakota Matrix Minerals Google Search for Ferro-eckermannite Excalibur Mineral Corp. Google Search for Ferro-eckermannite Exceptional Minerals Google Search for Ferro-eckermannite John Betts Fine Minerals Search for Ferro-eckermannite McDougall Minerals Google Search for Ferro-eckermannite Mineral News Website Link Rock and Mineral Shows Google Search for Ferro-eckermannite Weinrich Minerals, Inc. Google Search for Ferro-eckermannite Ask about Ferro-eckermannite here : Print or Cut-and-Paste your Ferro-eckermannite Specimen Label here :
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