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Fluoro-magnesio-arfvedsonite Mineral Data |
General Fluoro-magnesio-arfvedsonite Information |
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NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2 | ||
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Molecular Weight = 828.15 gm | ||
Potassium 1.42 % K 1.71 % K2O | |||
Sodium 5.55 % Na 7.48 % Na2O | |||
Calcium 1.94 % Ca 2.71 % CaO | |||
Magnesium 12.03 % Mg 19.95 % MgO | |||
Aluminum 0.65 % Al 1.23 % Al2O3 | |||
Iron 4.72 % Fe 0.87 % FeO / 5.78 % Fe2O3 | |||
Silicon 26.79 % Si 57.32 % SiO2 | |||
Hydrogen 0.10 % H 0.87 % H2O | |||
Oxygen 44.05 % O | |||
Fluorine 2.75 % F 2.75 % F | |||
- % F -1.16 % -O=F2 | |||
______ ______ | |||
100.00 % 99.52 % = TOTAL OXIDE | |||
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Na2K0.3Ca0.4Mg4.1Fe2+0.1Fe3+0.6Al0.2Si7.9O22F1.2(OH)0.8 | ||
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Albite-microcline fenite in the contact zone of the Ilmen alkaline massif. | ||
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Approved IMA 1998 (Dana # Added) | ||
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Ilmen-Vishnevye Mountains alkaline massif, south Urals, Russia. Link to MinDat.org Location Data. | ||
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Named as the fluorine-dominant member of magnesio-arfvedsonite. | ||
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IMA1998-056 | ||
Fluoro-magnesio-arfvedsonite Image | |||
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Fluoro-magnesio-arfvedsonite Crystallography |
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a:b:c =0.5446:1:0.2931 | ||
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a = 9.81, b = 18.01, c = 5.28, Z = 2; beta = 103.8° V = 905.93 Den(Calc)= 3.04 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m | ||
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By Intensity(I/Io): 3.129(1)(310), 8.42(0.34)(110), 2.804(0.28)(330),3.264(0.23)(240), 2.708(0.17)(151), 3.392(0.11)(041), 1.654(0.1)(511), 2.895(0.1)(510), 2.716(0.1)(331), | ||
Physical Properties of Fluoro-magnesio-arfvedsonite |
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{110} Perfect | ||
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Light gray. | ||
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3.09 | ||
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Translucent | ||
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Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
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Granular - Generally occurs as anhedral to subhedral crystals in matrix. | ||
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Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
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5.5 - Knife Blade | ||
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Vitreous (Glassy) | ||
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white | ||
Optical Properties of Fluoro-magnesio-arfvedsonite |
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CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.206,KPDmeas= 0.2027,KC= 0.209 Ncalc = 1.64 - 1.65 |
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Biaxial (+), a=1.618, b=1.629, g=1.632, bire=0.0140, 2V(Calc)=54, 2V(Meas)=50-70. Dispersion r > v. | ||
Calculated Properties of Fluoro-magnesio-arfvedsonite |
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Bulk Density (Electron Density)=3.01 gm/cc note: Specific Gravity of Fluoro-magnesio-arfvedsonite =3.04 gm/cc. |
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Fermion Index = 0.02 Boson Index = 0.98 |
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PEFluoro-magnesio-arfvedsonite = 3.19 barns/electron U=PEFluoro-magnesio-arfvedsonite x relectron= 9.61 barns/cc. |
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GRapi = 20.24 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Fluoro-magnesio-arfvedsonite |
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Fluoro-magnesio-arfvedsonite Classification |
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66.01.03c.09a (66)Inosilicate Double-Width Unbranched Chains, W=2 | ||
(66.01)with P=2 amphibole configuration | |||
(66.01.03c)Group 4, the sodic amphiboles | |||
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09.DE.25 09 - SILICATES (Germanates) | ||
09.D - Inosilicates* Structural terminology according to Liebau (1985) | |||
09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family | |||
Other Fluoro-magnesio-arfvedsonite Information |
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NAME( AmMin, Vol 86, p 1534) PHYS. PROP.(AmMin, Vol 86, p 1534) OPTIC PROP.(AmMin, Vol 86, p 1534) | ||
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Links to other databases for Fluoro-magnesio-arfvedsonite : 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 Fluoro-magnesio-arfvedsonite using: Visit our Advertisers for Fluoro-magnesio-arfvedsonite : Ask about Fluoro-magnesio-arfvedsonite here : Print or Cut-and-Paste your Fluoro-magnesio-arfvedsonite Specimen Label here :
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