Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Alumotungstite

Big Photo

Hemerdon Mine (Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK
© Steve Rust

Show Alumotungstite Photos (3)
Formula:
(W,Al)(O,OH)
 
3
System:IsometricColour:White
Name:For its aluminium content and by analogy to ferritungstite


The Aluminium analogue of Ferritungstite

Classification of Alumotungstite

IMA status:Approved
Strunz 8th edition ID:4/E.02-40
Nickel-Strunz 10th (pending) edition ID:4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Dana 8th edition ID:4.5.4.1

4 : SIMPLE OXIDES
5 : AX3
Hey's CIM Ref.:7.15.8

7 : Oxides and Hydroxides
15 : Oxides of Mo and W
mindat.org URL:http://www.mindat.org/min-160.html
Please feel free to link to this page.

Type Occurrence of Alumotungstite

Type Locality:Kramat Pulai Mine, Pulai, Kinta District, Perak, Malaysia
General Appearance of Type Material:As crystals, to 250 µm, in rounded aggregates; in microcrystalline patches, intimately intergrown with yttrotungstite
Place of Conservation of Type Material:National History Museum, London, England
Year of Discovery:1971
Geological Setting of type material:in fine-grained aggregates of yttrotungstite
Associated Minerals at type locality:
Yttrotungstite-(Y)

Occurrences of Alumotungstite

Geological Setting:in cavities relict after ferberite, which has replaced scheelite, in fine-grained graphitic schists and contained quartz veins

Physical Properties of Alumotungstite

Diaphaneity (Transparency):Translucent
Colour:White
Density (calculated):4.52 g/cm3

Crystallography of Alumotungstite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fd3m {F41/d 3 2/m}
Cell Parameters:a = 10.2Å
Unit Cell Volume:V 1,061.21 ų (Calculated from Unit Cell)
Z:16
Morphology:octahedra, sometimes flattened with a hexagonal outline
Twinning:interpenetrant octahedra may represent twins on {111}
X-Ray Powder Diffraction:
d-spacingIntensity
5.86 (vvs)
3.07 (vs)
2.93 (vs)
1.80 (s)
1.96 (ms)
1.72 (ms)
Comments:Recorded on material from Kramat Pulai Mine, Malaysia

Optical Data of Alumotungstite

Type:Isotropic
Comments:commonly weakly anisotropic; n = 1.935, birefringence 0.02

Chemical Properties of Alumotungstite

Formula:
(W,Al)(O,OH)
 
3
Essential elements:O, W
All elements listed in formula:Al, H, O, W
Analytical Data:Kramat Pulai Mine, Malaysia, by electron microprobe
WO3 (88.0)
SiO2 (0.24)
Al2O3 (8.3)
Fe2O3 (0.06)
CaO (0.77)

sum 97.4 wt.-%

Relationship of Alumotungstite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DH.05Brannerite
(U
4+
 
,Ca)(Ti,Fe
3+
 
)
 
2
O
 
6
4.DH.05Orthobrannerite
U
4+
 
U
6+
 
Ti
 
4
O
 
12
(OH)
 
2
4.DH.05Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
4.DH.10Kassite
CaTi
 
2
O
 
4
(OH)
 
2
4.DH.10Lucasite-(Ce)
CeTi
 
2
(O,OH)
 
6
4.DH.15Bariomicrolite
Ba(Ta,Nb)
 
2
(O,OH)
 
7
4.DH.15Bariopyrochlore
(Ba,Sr)
 
2-x
(Nb,Ti)
 
2
(O,OH)
 
7
4.DH.15Betafite
(Ca,U)
 
2
(Ti,Nb)
 
2
O
 
6
(OH)
4.DH.15Bismutomicrolite
(Bi,Ca)(Ta,Nb)
 
2
O
 
6
(OH)
4.DH.15Calciobetafite
(Ca,RE,Th,U)
 
2
(Nb,Ta,Ti)
 
2
O
 
7
4.DH.15Ceriopyrochlore-(Ce)
(Ce,Ca,Y)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Cesstibtantite
(Cs,Na)SbTa
 
4
O
 
12
4.DH.15Ferritungstite
(W,Fe
3+
 
)(O,OH)
 
3
4.DH.15Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DH.15Kalipyrochlore
(K,Sr)
 
2-x
Nb
 
2
O
 
6
(O,OH)·nH
 
2
O
4.DH.15Microlite
(Ca,Na)
 
2
Ta
 
2
O
 
6
(O,OH,F)
4.DH.15Natrobistantite
(Na,Cs)Bi(Ta,Nb,Sb)
 
4
O
 
12
4.DH.15Plumbopyrochlore
(Pb,Ca,Y,U)
 
2-x
(Nb,Ta,Ti)
 
2
O
 
6
(OH,O)
4.DH.15Plumbomicrolite
(Pb,Ca,U)
 
2-x
(Ta,Nb,Sn)
 
2
O
 
6
(O,[])
4.DH.15Plumbobetafite
(Pb,U,Ca)(Ti,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Pyrochlore
(Ca,Na)
 
2
Nb
 
2
O
 
6
(OH,F)
4.DH.15Stibiomicrolite
(Sb,Ca,Na)
 
2
(Ta,Nb)
 
2
O
 
7
4.DH.15Strontiopyrochlore
(Sr,Ce,Ca)
 
2-x
(Nb,Fe)
 
2
(O,OH)
 
7
4.DH.15Stannomicrolite
(Sn,Fe,Mn)
 
2
(Ta,Nb,Sn)
 
2
(O,OH)
 
7
4.DH.15Stibiobetafite
(Sb,Ca)
 
2
(Ti,Nb,Ta)
 
2
(O,OH)
 
7
4.DH.15Uranmicrolite
(U,Ca,Ce)
 
2
(Ta,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Uranpyrochlore
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Yttrobetafite-(Y)
(Y,U,Ce)
 
2
(Ti,Nb,Ta)
 
2
O
 
6
OH
4.DH.15Yttropyrochlore-(Y)
(Y,Ca,U)
 
1-2
(Nb,Ta,Ti)
 
2
(O,OH)
 
7
4.DH.15Fluornatromicrolite
(Na,Ca,Bi)
 
2
Ta
 
2
O
 
6
F
4.DH.15Bismutopyrochlore
(Bi,U,Ca,Pb)
 
1+x
(Nb,Ta)
 
2
O
 
6
(OH)·nH
 
2
O
4.DH.15Thorian Pyrochlore
4.DH.15Elsmoreite
WO
 
3
·0.5H
 
2
O
4.DH.20Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
4.DH.20Bindheimite
Pb
 
2
Sb
 
2
O
 
6
(O,OH)
4.DH.20Monimolite
(Pb,Ca,Fe)
 
3
Sb
 
2
O
 
7
4.DH.20Partzite
Cu
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Roméite
(Ca,Fe,Mn,Na)
 
2
(Sb,Ti)
 
2
O
 
6
(O,OH,F)
4.DH.20Stetefeldtite
Ag
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stibiconite
Sb
3+
 
Sb
5+
2
O
 
6
(OH)
4.DH.25Rosiaite
PbSb
5+
2
O
 
6
4.DH.30Zirconolite
CaZrTi
 
2
O
 
7
4.DH.35Liandratite
U(Nb,Ta)
 
2
O
 
8
4.DH.35Petscheckite
UFe(Nb,Ta)
 
2
O
 
8
4.DH.40Ingersonite
Ca
 
3
MnSb
 
4
O
 
14
4.DH.45Pittongite
Na
 
0.22
(W,Fe
3+
 
)(O,OH)
 
3
 · 0.44H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.15.1Tugarinovite
MoO
 
2
7.15.2Molybdite
MoO
 
3
7.15.3Sidwillite
MoO
 
3
·2H
 
2
O
7.15.4Ilsemannite
Mo
 
3
O
 
8
·nH
 
2
O
7.15.5Tungstite
WO
 
3
·H
 
2
O
7.15.6Hydrotungstite
WO
 
3
·2H
 
2
O
7.15.7Meymacite
WO
 
3
·2H
 
2
O
7.15.9Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7

Other Names for Alumotungstite

Synonyms:
IMA1968-004
Other Languages:
German:Alumotungstit
Spanish:Alumotungstita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alumotungstite

Reference List:Davis, R. J. and Smith, G. W. (1971): Yttrotungstite. Mineralogical Magazine 38, 261-285.

Davis, R. J., Francis, J. G. and Reed, S. J. B. in: M. Fleischer (1977): US Geol. Surv. Open-File Report 81-1169.

Sahama, T. G. (1981): The secondary tungsten minerals, a review. Mineralogical Record 12, 81-87.

J. W. Anthony et al. (1997): "Handbook of Mineralogy", Vol. 3, 11.

Internet Links for Alumotungstite

Search Engines:
  • Look for Alumotungstite on Google
  • Look for Alumotungstite images on Google
    • External Links:
  • Look for Alumotungstite on Webmineral
  • Look for Alumotungstite on Athena Mineralogy
  • Look for Alumotungstite on Wikipedia
  • Look for Alumotungstite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Alumotungstite in the Natural History Museum (London) online catalogue
  • Alumotungstite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fine Minerals from Dan Weinrich Minerals
  • Edwards Minerals - Fine Specimens
  • Lapis Mineral Magazin
  • Fabre Minerals - search for Alumotungstite specimens
  • Search for - Alumotungstite - on e-Rocks Mineral Sales & Auctions
  • rare and unusual minerals mainly crystallized
  • Top quality minerals from Kristalle of California
  • Find Alumotungstite on www.crystalclassics.co.uk
  • SpiriferMinerals.com - high quality specimens
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • The Arkenstone - Fine Minerals
  • Wilensky Fine Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Alumotungstite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Malaysia
     
    • Perak
      • Kinta District
        • Pulai
    		Min.Mag.(1971) 38, 261-285
    Rwanda
     
    • Northern Province
      • Cyeru Commune
        • Gifurwe sector
    		J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11
    Uganda
     
    • Kigezi District
    		J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11
    J. W. Anthony et al.: "Handbook of Mineralogy", Vol.3 (1997), 11
    UK
     
    • England
      • Devon
        • Tavistock District
          • Plympton
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 7th Nov 2009 11:47:23