Qitianlingite Mineral Data

Advertisment

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.

General Qitianlingite Information

Chemical Formula:

Fe++2Nb2W++++++O10

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

Empirical Formula:

Fe²⁺₂Nb₂WO₁₀

Environment:

Pegmatite dike in granite.

IMA Status:

Approved IMA 1985

Locality:

Qitianling, Hunan Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Qitianlingite + Pronunciation

Synonym:

ICSD 65617

PDF 41-1415

Search for Qitianlingite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Qitianlingite Crystallography

Axial Ratios:

a:b:c =4.1422:1:0.8815

Cell Dimensions:

a = 23.706, b = 5.723, c = 5.045, Z = 4; V = 684.45 Den(Calc)= 6.22

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/I_o): 2.96(1), 1.773(0.8), 3.65(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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

Color:

Black.

Density:

6.42

Diaphaneity:

Opaque

Hardness:

5.5 - Knife Blade

Luster:

Sub Metallic

Optical Properties of Qitianlingite

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

Electron Density:

Bulk Density (Electron Density)=5.59 gm/cc
note: Specific Gravity of Qitianlingite =6.22 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Qitianlingite}= 395.63 barns/electron
U=PE_{Qitianlingite} x rElectron Density=2,210.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qitianlingite is Not Radioactive

Qitianlingite Classification

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

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

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

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 - 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

Search for Qitianlingite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Qitianlingite :

Dakota Matrix Minerals Google Search for Qitianlingite
John Betts Fine Minerals Search for Qitianlingite
McDougall Minerals Google Search for Qitianlingite
Rock and Mineral Shows Google Search for Qitianlingite
Weinrich Minerals, Inc. Google Search for Qitianlingite

Ask about Qitianlingite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: