Alumotungstite  Mineral Data

Alumotungstite Mineral Data

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General Alumotungstite Information

Help on Chemical  Formula: Chemical Formula: (W,Al)(O,OH)3 (?)
Help on Composition: Composition: Molecular Weight = 216.36 gm
   Aluminum   1.25 %  Al    2.36 % Al2O3
   Hydrogen   0.09 %  H     0.83 % H2O
   Tungsten  76.48 %  W    96.44 % WO3
   Oxygen    22.18 %  O
            ______        ______ 
            100.00 %       99.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: W0.9Al0.1O2.8(OH)0.2
Help on Environment: Environment: Originally reported as the aluminum analog of ferritungstite.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Kramat Pulai mine, Kinta district, Perak, Malaysia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition.
Help on Name Pronunciation: Name Pronunciation: Alumotungstite + Pronunciation Say ALUMOTUNGSTITE
 

Alumotungstite Image

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Alumotungstite

Comments: Pale orange, chalky crust of alumotungstite on ferberite with quartz.
Location: Hemerdon mine, Sparkwell, Plympton, Devon, England. Scale: See Image.
© Rruff Database

Alumotungstite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.2, Z = 8; V = 1,061.21 Den(Calc)= 2.71
Help on Crystal System: Crystal System: IsometricSpace Group: Unk
 

Physical Properties of Alumotungstite

Help on Color: Color: Greenish yellow.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Streak: Streak: yellow
 

Optical Properties of Alumotungstite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.924 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3321,KC= 0.1726
Ncalc = 1.47
Help on Optical Data: Optical Data: Isotropic, n=1.9.
 

Calculated Properties of Alumotungstite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.31 gm/cc
note: Specific Gravity of Alumotungstite =2.71 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PEAlumotungstite = 969.30 barns/electron
U=PEAlumotungstite x rElectron Density=2,236.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Alumotungstite is Not Radioactive
 

Alumotungstite Classification

Help on  Dana Class: Dana Class: 04.05.04.01 (04)Simple Oxides
  (04.05)with a cation charge of 6+ (A++++++ O3)
  (04.05.04)Dana Group
 
04.05.04.01 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic
Help on  Strunz Class: Strunz Class: 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
 
04.DH.15 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic
 
04.DH.15 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Ferritungstite (K,Ca,Na)(W,Fe)2(O,OH)6•(H2O) F d3m 4/m 3 2/m
 
04.DH.15 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m
 
04.DH.15 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Jixianite Pb(W,Fe)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m
 
04.DH.15 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m
 
04.DH.15 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m
 
04.DH.15 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m
 
04.DH.15 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3
 
04.DH.15 Elsmoreite! WO3•0.5(H2O) F d3m 4/m 3 2/m
 

Other Alumotungstite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Alumotungstite :
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

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Alumotungstite

(W,Al)(O,OH)3 (?)
Dana No: 04.05.04.01 Strunz No: 04.DH.15
Locality:

 

Notes: