Mineralogy Database

Krasnogorite Mineral Data

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General Krasnogorite Information

Help on Chemical  Formula: Chemical Formula: WO3
Help on Composition: Composition: Molecular Weight = 231.85 gm
   Tungsten  79.30 %  W   100.00 % WO3
   Oxygen    20.70 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: WO3
Help on Environment: Environment: Occur as pseudomorphs after hard alloy VK8 (92o/oW C,80/oCo) on the plates of the cutting element of a drilling machine found in burned rocks. Dehydrated tungstite?
Help on IMA Status: IMA Status: Not Submitted IMA
Help on Locality: Locality: Krasnoselskaya mine in Krasnogorsk, Chelyabinsk basin, Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.

Krasnogorite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9814:1:0.5099
Help on Cell Dimensions: Cell Dimensions: a = 7.39, b = 7.53, c = 3.84, Z = 4; V = 213.68 Den(Calc)= 7.21
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmnb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.769(1), 3.848(1), 3.656(0.86),

Physical Properties of Krasnogorite

Help on Color: Color: Gray, Bluish gray.
Help on Density: Density: 6.62
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Pseudomorphous - Occurs in the form of another mineral.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: bluish gray

Optical Properties of Krasnogorite

Help on Optical Data: Optical Data: NCalc= 2.23 - from Gladstone-Dale relationship (KC = 0.171) where Ncalc=Dcalc*KC+1
NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.171) where Ncalc=Dmeas*KC+1

Calculated Properties of Krasnogorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.10 gm/cc
note: Specific Gravity of Krasnogorite =7.21 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEKrasnogorite =1,012.11 barns/electron
U=PEKrasnogorite x rElectron Density=6,168.99 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krasnogorite is Not Radioactive

Krasnogorite Classification

Help on  Dana Class: Dana Class: (04)Oxide Minerals
  (04.00)Without Dana Classification Numbers
  (04.00.00)Oxide Ashanite? (Nb,Ta,U,Fe,Mn)4O8 Pcan 2/m 2/m 2/m Chubutite* Pb7O6Cl2 Unk Ortho Clinobirnessite* Na4Mn14O27•9(H2O) Mono Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m IMA2008-022 UO2(OH)2 pseudo-orthorhombic Mono Krasnogorite* WO3 Pmnb 2/m 2/m 2/m Mengxianminite* (Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29 Unk Ortho Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig Tantalowodginite* (Mn2,[])4Ta4Ta8O32 C 2/c 2/m Ungursaite* NaCa5(Ta,Nb)24O65(OH) P 63/m,P 63 Hex Wolframoixiolite* (Fe,Mn,Nb)(Nb,W,Ta)O4 Pc m
Help on  Strunz Class: Strunz Class: 04.EA.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.E - Metal:Oxygen = < 1:2
  04.EA -Oxides with metal : oxygen < 1:2 (M2O5, MO3)
04.EA.10 Krasnogorite* WO3 Pmnb 2/m 2/m 2/m
04.EA.10 Molybdite MoO3 Pbnm 2/m 2/m 2/m

Other Krasnogorite Information

Help on References: References: NAME( AmMin, 78:672) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996)
Help on See Also: See Also: Links to other databases for Krasnogorite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 04.EA.10





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