General Aluminobarroisite Information Chemical Formula: |
[ ]CaNaMg3Al2(Si7Al)O22(OH)2 |
Composition: |
Molecular Weight = 799.53 gm |
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Sodium 2.88 % Na 3.88 % Na2O |
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Calcium 5.01 % Ca 7.01 % CaO |
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Magnesium 9.12 % Mg 15.12 % MgO |
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Aluminum 10.12 % Al 19.13 % Al2O3 |
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Silicon 24.59 % Si 52.60 % SiO2 |
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Hydrogen 0.25 % H 2.25 % H2O |
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Oxygen 48.03 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CaNaMg3Al2(Si7AlO22)(OH)2 |
IMA Status: |
Approved IMA 1997 (Dana # Added) |
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). |
Name Pronunciation: |
Aluminobarroisite |
| | Search for Aluminobarroisite Images
Images:
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| | Aluminobarroisite Crystallography Axial Ratios: |
a:b:c =0.5499:1:0.2944 |
Cell Dimensions: |
a = 9.9, b = 18, c = 5.3, Z = 2; beta = 105° V = 912.28 Den(Calc)= 2.91 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
| Physical Properties of Aluminobarroisite Density: |
2.94 |
Diaphaneity: |
Transparent to Translucent |
Hardness: |
5-6 - Between Apatite and Orthoclase |
Luster: |
Vitreous (Glassy) |
| Optical Properties of Aluminobarroisite Optical Data: |
Biaxial (-) |
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NCalc= 1.61 - from Gladstone-Dale relationship (KC = 0.209) where Ncalc=Dcalc*KC+1 |
NCalc= 1.61 - from Gladstone-Dale relationship (KC = 0.209) where Ncalc=Dmeas*KC+1 | Calculated Properties of Aluminobarroisite Electron Density: |
Bulk Density (Electron Density)=2.90 gm/cc |
note: Specific Gravity of Aluminobarroisite =2.91 gm/cc. Fermion Index: |
Fermion Index = 0.02 |
Boson Index = 0.98 Photoelectric: |
PEAluminobarroisite = 2.11 barns/electron |
U=PEAluminobarroisite x rElectron Density= 6.11 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Aluminobarroisite is Not Radioactive | Aluminobarroisite Classification Dana Class: |
66.01.03b.05a (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 Aluminobarroisite Information References: |
PHYS. PROP.(List of New Min. Names,28-33th,1974-1984) |
See Also: |
Links to other databases for Aluminobarroisite : |
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 Aluminobarroisite using: Visit our Advertisers for Aluminobarroisite : A Bijoux Google Search for AluminobarroisiteAdam's Minerals Google Search for Aluminobarroisite Cape Minerals Google Search for Aluminobarroisite Dakota Matrix Minerals Google Search for Aluminobarroisite Excalibur Mineral Corp. Google Search for Aluminobarroisite Exceptional Minerals Google Search for Aluminobarroisite John Betts Fine Minerals Search for Aluminobarroisite McDougall Minerals Google Search for Aluminobarroisite Mineral News Website Link Rock and Mineral Shows Google Search for Aluminobarroisite Weinrich Minerals, Inc. Google Search for Aluminobarroisite Ask about Aluminobarroisite here : Print or Cut-and-Paste your Aluminobarroisite Specimen Label here :
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