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Tungstite Mineral Data + |
General Tungstite Information |
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| WO3·(H2O) | |||
| Molecular Weight = 249.86 gm | |||
| Hydrogen 0.81 % H 7.21 % H2O | |||
| Tungsten 73.58 % W 92.79 % WO3 | |||
| Oxygen 25.61 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| WO3·(H2O) | |||
| Secondary mineral derived from the alteration of tungsten minerals. | |||
| Valid Species (Pre-IMA) 1868 | |||
| Trubull, Connecticut. Link to MinDat.org Location Data. | |||
| Named after its composition containig tungsen (Swedish, tung sten = "heavy stone"). | |||
| ICSD 201806 | |||
| PDF 43-679 | |||
Tungstite Image | |||
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Tungstite Crystallography |
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| a:b:c =0.4977:1:0.4783 | |||
| a = 5.328, b = 10.704, c = 5.12, Z = 4; V = 292.00 Den(Calc)= 5.68 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb | |||
| By Intensity(I/Io): 3.49(1), 2.56(0.9), 2.68(0.9), | |||
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Physical Properties of Tungstite |
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| [001] Perfect, [???] Distinct | |||
| Yellow, Yellow green, Yellow green, Light yellow. | |||
| 5.5 | |||
| Translucent to subtranslucent | |||
| Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). | |||
| Pulverulent - Forms a loose, poorly-coherent powdery mass. | |||
| 2.5 - Finger Nail | |||
| None. | |||
| Earthy (Dull) | |||
| Nonmagnetic | |||
| yellow | |||
Optical Properties of Tungstite |
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| CI meas= -0.188 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.15 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2107,KPDmeas= 0.2176,KC= 0.1832 |
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| Biaxial (-), a=2.09, b=2.24, g=2.26, bire=0.1700 | |||
Calculated Properties of Tungstite |
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relectron=4.91 gm/cc |
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| Fermion Index = 0.10519 Boson Index = 0.89481 |
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PETungstite = 918.43 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tungstite is Not Radioactive |
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Tungstite Classification |
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| 4.5.2.1 (4)Simple Oxides | |||
| (4.5)with a cation charge of 6+ (A++++++ O3) | |||
| (4.5.2)Dana Group | |||
| IV/E.02-10 IV - Oxides | |||
| IV/E - Oxides with metal : oxygen < 1:2 (M2O5, MO3) | |||
| IV/E.02 - Tungstite - Cerotungstite-(Ce) series | |||
Other Tungstite Information |
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| NAME( Pough60) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) | |||
| Links to other databases for Tungstite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Tungstite using: Visit our Advertisers for Tungstite : Translate Tungstite Mineral Data : Ask about Tungstite here : Print or Cut-and-Paste your Tungstite Specimen Label here :
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