[Mineral Forums] [Minerals for Sale] [About Us] [En Espanol] [Mineral Gallery] Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996 General Ferrotaaffeite-6N3S Information(Fe++,Zn,Mg)2Al6BeO12 |
Molecular Weight = 470.24 gm |
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Magnesium 1.03 % Mg 1.71 % MgO |
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Beryllium 1.72 % Be 4.79 % BeO |
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Aluminum 34.43 % Al 65.05 % Al2O3 |
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Zinc 4.17 % Zn 5.19 % ZnO |
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Iron 17.81 % Fe 22.92 % FeO |
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Oxygen 40.83 % O |
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100.00 % 99.66 % = TOTAL OXIDE |
Fe2+1.5Zn0.3Mg0.2Al6Be0.9O12 |
Wall zone of a granitic pegmatite in "hornblende" gabbro. Renamed from pehrmanite. |
Approved IMA 1981 |
Rosendal pegmatite, Kemio (Kimito) Island, southwestern Finland. Link to MinDat.org Location Data. |
Named as the FERRous analog of magnesiotaaffeite. (S=Spinel, N=Nolanite Layers). |
IMA2001-A |
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Pehrmanite |
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| | Ferrotaaffeite-6N3S Crystallographya:c = 1:7.22105 |
a = 5.7, c = 41.16, Z = 6; V = 1,158.13 Den(Calc)= 4.05 |
Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m |
By Intensity(I/Io): 2.422(1), 2.856(0.8), 1.426(0.5), |
| Physical Properties of Ferrotaaffeite-6N3S{???} Indistinct |
Light green. |
4.07 |
Semitransparent |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
Tabular - Form dimensions are thin in one direction. |
8-8.5 - Between Topaz and Chrysoberyl |
Vitreous (Glassy) |
white |
| Optical Properties of Ferrotaaffeite-6N3Spale grayish brown. |
pale greenish. |
CI meas= 0.034 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1951,KPDmeas= 0.1941,KC= 0.2009 Ncalc = 1.81 - 1.82 Uniaxial (-), w=1.79. |
Very weak. |
Gray. |
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| Calculated Properties of Ferrotaaffeite-6N3SBulk Density (Electron Density)=3.93 gm/cc |
note: Specific Gravity of Ferrotaaffeite-6N3S =4.05 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEFerrotaaffeite-6N3S = 8.44 barns/electron |
U=PEFerrotaaffeite-6N3S x rElectron Density= 33.16 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ferrotaaffeite-6N3S is Not Radioactive | Ferrotaaffeite-6N3S Classification07.02.12.02 (07)Multiple Oxides |
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(07.02)(A+ B++)2 X4 Spinel group |
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(07.02.12)Taaffeite Group (T2 = Be + T) |
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04.FC.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra |
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| Other Ferrotaaffeite-6N3S InformationNAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
Links to other databases for Ferrotaaffeite-6N3S : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - Google Images 4 - Google Scholar 5 - MinDAT 6 - MinMax(Deutsch) 7 - MinMax(English) 8 - Mineralienatlas (Deutsch) 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Ferrotaaffeite-6N3S using: Visit our Advertisers for Ferrotaaffeite-6N3S : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Ferrotaaffeite-6N3S Mineral Data : Ask about Ferrotaaffeite-6N3S here : Print or Cut-and-Paste your Ferrotaaffeite-6N3S Specimen Label here :
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