Qitianlingite Mineral Data

Qitianlingite Mineral Data
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General Qitianlingite Information

Help on Chemical Formula: Chemical Formula: Fe++2Nb2W++++++O10
Help on Composition: Composition: Molecular Weight = 641.35 gm
   Niobium   28.97 %  Nb   41.45 % Nb2O5
   Iron      17.42 %  Fe   22.40 % FeO
   Tungsten  28.67 %  W    36.15 % WO3
   Oxygen    24.95 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+2Nb2WO10
Help on Environment: Environment: Pegmatite dike in granite.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Qitianling, Hunan Province, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Qitianlingite + Pronunciation Say QITIANLINGITE
Help on Synonym: Synonym: ICSD 65617
  PDF 41-1415
 

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Qitianlingite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =4.1422:1:0.8815
Help on Cell Dimensions: Cell Dimensions: a = 23.706, b = 5.723, c = 5.045, Z = 4; V = 684.45 Den(Calc)= 6.22
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.96(1), 1.773(0.8), 3.65(0.7),
Click Here for Large Qitianlingite Structure Window Crystal Structure:

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Zhizhong P , Su W , Zhesheng M , Guangming Y , Kexue Tongbao , 33 (1988) p.856-861, The crystal structure of qitianlingite (Fe2Nb2WO10), Locality: Qitianling, Hunan Province, China

 

Physical Properties of Qitianlingite

Help on Color: Color: Black.
Help on Density: Density: 6.42
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Sub Metallic
 

Optical Properties of Qitianlingite

Help on Optical Data: Optical Data: NCalc= 2.34 - from Gladstone-Dale relationship (KC = 0.215) where Ncalc=Dcalc*KC+1
NCalc= 2.38 - from Gladstone-Dale relationship (KC = 0.215) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Qitianlingite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.59 gm/cc
note: Specific Gravity of Qitianlingite =6.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEQitianlingite = 395.63 barns/electron
U=PEQitianlingite x rElectron Density=2,210.05 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qitianlingite is Not Radioactive
 

Qitianlingite Classification
Help on Dana Class: Dana Class: 08.01.12.01 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.01)where A BO4
  (08.01.12)Dana Group
 
08.01.12.01 Qitianlingite Fe2Nb2WO10 P bcn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 04.DB.35 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DB -With medium-sized cations; chains of edge-sharing octahedra
 
04.DB.35 Columbite-(Mg) (Mg,Fe,Mn)(Nb,Ta)2O6 Pcan 2/m 2/m 2/m
 
04.DB.35 Tantalite-(Fe) FeTa2O6 Pcan 2/m 2/m 2/m
 
04.DB.35 Columbite-(Fe) FeNb2O6 Pcan 2/m 2/m 2/m
 
04.DB.35 Columbite-(Mn) (Mn,Fe)(Nb,Ta)2O6 Pcan 2/m 2/m 2/m
 
04.DB.35 Qitianlingite Fe2Nb2WO10 P bcn 2/m 2/m 2/m
 
04.DB.35 Tantalite-(Mn) MnTa2O6 Pcan 2/m 2/m 2/m
 
04.DB.35 Tantalite-(Mg)! (Mg,Fe)(Ta,Nb)2O6 P bcn 2/m 2/m 2/m
 

Other Qitianlingite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Qitianlingite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Qitianlingite Specimen Label here :

Qitianlingite

Fe++2Nb2W++++++O10
Dana No: 08.01.12.01 Strunz No: 04.DB.35
Locality:

 

Notes: