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Ferritungstite Mineral Data |
General Ferritungstite Information |
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(K,Ca,Na)(W++++++,Fe+++)2(O,OH)6•(H2O) | ||
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Molecular Weight = 416.40 gm | ||
Potassium 1.88 % K 2.26 % K2O | |||
Sodium 0.11 % Na 0.15 % Na2O | |||
Calcium 0.96 % Ca 1.35 % CaO | |||
Iron 6.71 % Fe 8.63 % FeO | |||
Hydrogen 0.68 % H 6.06 % H2O | |||
Tungsten 66.23 % W 83.52 % WO3 | |||
Oxygen 23.44 % O | |||
______ ______ | |||
100.00 % 101.96 % = TOTAL OXIDE | |||
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K0.2Ca0.1Na0.02W1.5Fe2+0.5O4.7(H2O)1.4 | ||
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An alteration coating on and replacing primary tungsten minerals. | ||
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Valid Species (Pre-IMA) 1911 | ||
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Germania tungsten mine, Deer Trail district, Fruitland, Stevens County, Washington, USA. Link to MinDat.org Location Data. | ||
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Named for FERRIc iron and TUNGsten in its composition. | ||
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Ferritungstite ![]() |
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ICSD 79158 | ||
PDF 11-331 | |||
Ferritungstite Image | |||
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Ferritungstite Crystallography |
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a = 10.352, Z = 8; V = 1,109.36 Den(Calc)= 4.99 | ||
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Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m | ||
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By Intensity(I/Io): 2.966(1), 5.94(1), 3.1(0.9), | ||
Physical Properties of Ferritungstite |
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Yellow, Brownish yellow. | ||
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5.02 - 5.2, Average = 5.1 | ||
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Translucent | ||
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Aggregates - Made of numerous individual crystals or clusters. | ||
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Octahedral Crystals - Occurs as octahedral shaped crystals. | ||
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Rosette - Bundled tabular aggregates resembling rose flower petals. | ||
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Non-fluorescent. | ||
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Vitreous (Glassy) | ||
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light yellow | ||
Optical Properties of Ferritungstite |
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CI meas= -0.171 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.199 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2244,KPDmeas= 0.2192,KC= 0.1872 Ncalc = 1.93 - 1.97 |
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Isotropic, n=2.09-2.15. | ||
Calculated Properties of Ferritungstite |
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Bulk Density (Electron Density)=4.46 gm/cc note: Specific Gravity of Ferritungstite =5.11 gm/cc. |
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Fermion Index = 0.09 Boson Index = 0.91 |
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PEFerritungstite = 821.78 barns/electron U=PEFerritungstite x relectron=3,663.15 barns/cc. |
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GRapi = 23.64 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Ferritungstite |
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Ferritungstite Classification |
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04.05.05.01 (04)Simple Oxides | ||
(04.05)with a cation charge of 6+ (A++++++ O3) | |||
(04.05.05)Dana Group | |||
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04.DH.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate | ||
04.D - Metal:Oxygen = 1:2 and similar | |||
04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra | |||
Other Ferritungstite Information |
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NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) | ||
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Links to other databases for Ferritungstite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Ferritungstite using: Visit our Advertisers for Ferritungstite : Ask about Ferritungstite here : Print or Cut-and-Paste your Ferritungstite Specimen Label here :
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