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Uranotungstite

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About UranotungstiteHide

Formula:
(Fe2+,Ba,Pb)(UO2)2(WO4)(OH)4 · 12H2O
Colour:
Yellow, orange, brown
Lustre:
Pearly, Dull
Hardness:
2
Crystal System:
Orthorhombic
Name:
The name reflects its composition: Uranium and Tungsten.
The correct crystal symmetry of uranotungstite is monoclinic, not orthorhombic, space group P21/m (Uwe Kolitsch and Jakub Plášil, work in progress); the original formula is also incorrect.


Classification of UranotungstiteHide

Approved
Approval Year:
1984
7.HB.25

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
B : With U6+
49.3.5.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
3 : Hydrated Molybdates and Tungstates Containing Hydroxyl or Halogen
27.4.12

27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates

Physical Properties of UranotungstiteHide

Pearly, Dull
Transparency:
Translucent
Colour:
Yellow, orange, brown
Hardness:

Optical Data of UranotungstiteHide

Type:
Biaxial (-)
RI values:
nα = 1.682 nβ = 1.845 nγ = 1.855
2V:
Measured: 42° , Calculated: 24°
Max Birefringence:
δ = 0.173
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v moderate

Chemical Properties of UranotungstiteHide

Formula:
(Fe2+,Ba,Pb)(UO2)2(WO4)(OH)4 · 12H2O
IMA Formula:
Fe(UO2)2(WO4)(OH)4 · 12H2O

Crystallography of UranotungstiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 9.22 Å, b = 13.81 Å, c = 7.17 Å
Ratio:
a:b:c = 0.668 : 1 : 0.519
Unit Cell V:
912.94 ų (Calculated from Unit Cell)

Type Occurrence of UranotungstiteHide

Synonyms of UranotungstiteHide

Other Language Names for UranotungstiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Metatorbernite2 photos of Uranotungstite associated with Metatorbernite on mindat.org.
Gearksutite2 photos of Uranotungstite associated with Gearksutite on mindat.org.
Prosopite1 photo of Uranotungstite associated with Prosopite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.HB.15Calcurmolite(Ca,Na)2(UO2)3Mo2(O,OH)11 · nH2O
7.HB.20TengchongiteCaO · 6UO3 · 2MoO3 · 12H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

27.4.1CuprotungstiteCu2(WO4)(OH)2Tet. 4 2 2 : P41 21 2
27.4.2ScheeliteCa(WO4)Tet. 4/m : I41/a
27.4.4AnthoiniteAlWO3(OH)3Tric. 1
27.4.5MpororoiteWAlO3(OH)3 · 2(H2O)
27.4.6Yttrotungstite-(Y)YW2O6(OH)3
27.4.7Yttrotungstite-(Ce)(Ce,Nd,Y)W2O6(OH)3Mon. 2 : P21
27.4.8StolzitePb(WO4)Tet. 4/m : I41/a
27.4.9RaspitePb(WO4)Mon. 2/m : P21/b
27.4.10RusselliteBi2WO6Orth.
27.4.11PinalitePb3WO5Cl2Orth.
27.4.13HübneriteMnWO4Mon. 2/m : P2/b
27.4.14FerberiteFeWO4Mon. 2/m : P2/b
27.4.15Wolframite(Fe2+)WO4 to (Mn2+)WO4Mon. 2/m : P2/b
27.4.16FerritungstiteIso. m3m (4/m 3 2/m) : Fd3m
27.4.17Phyllotungstite(H2O,M)x(W,Fe)(O,OH)3 · yH2O (M = Ca, Cs, Pb or K)Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
27.4.18Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10Orth.

Other InformationHide

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

References for UranotungstiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Walenta, K. (1985): Uranotungstit, ein neues sekundäres Uranmineral aus dem Schwarzwald. Tschermaks Mineralogische und Petrographische Mitteilungen: 34, 25-34. (in German).
American Mineralogist (1986): 71: 1547.

Internet Links for UranotungstiteHide

Localities for UranotungstiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
France
 
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
Le Règne Minéral, (33), 5-25.
Germany (TL)
 
  • Baden-Württemberg
    • Black Forest
      • St Blasien
        • Menzenschwand
Tscherm.Min.Petr.Mitt.(1985) 34, 25-34
      • Wolfach
        • Oberwolfach
          • Rankach valley
Walenta, K. (1985): Uranotungstit, ein neues sekundäres Uranmineral aus dem Schwarzwald. Tschermaks Mineral. Petrogr. Mitt., 34, 25-34. (in German); Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
Namibia
 
  • Erongo Region
    • Dâures
Schnaitmann, E. A., Nägele, H., Niedermayr, G., Brandstätter, F. & Jahn, S. (2007): Das Metazeunerit-Pocket auf Tubussis 22, Erongo. Mineralien-Welt 18 (2), 33-43. (in German)
    • Karibib
Bezing, L. von, Bode, R. & Jahn, S. (2008): Namibia Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag GmbH, Haltern, 321 pp. (in English)
Mineral and/or Locality  
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