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Yttrotungstite-(Y)

Big Photo

Kramat Pulai Mine, Pulai, Kinta District, Perak, Malaysia
© Thomas Witzke

Formula:
YW
 
2
O
 
6
(OH)
 
3
Colour:Orange-yellowHardness:1
Name:The name is derived from its composition, namely the presence of yttrium and tungsten.


See also Yttrotungstite-(Ce) and Unnamed (Nd-analogue of Yttrotungstite-(Ce))

Classification of Yttrotungstite-(Y)

IMA status:Approved
Strunz 8th edition ID:4/E.02-70
Nickel-Strunz 10th (pending) edition ID:4.FD.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
D : Hydroxides with OH, without H2O; chains of edge-sharing octahedra
Dana 8th edition ID:49.3.3.2

49 : HYDRATED MOLYBDATES AND TUNGSTATES
3 : Hydrated Molybdates and Tungstates Containing Hydroxyl or Halogen
Hey's CIM Ref.:27.4.6

27 : Sulphites, Chromates, Molybdates and Tungstates
4 : Tungstates
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Type Occurrence of Yttrotungstite-(Y)

Type Locality:Kramat Pulai Mine, Pulai, Kinta District, Perak, Malaysia

Physical Properties of Yttrotungstite-(Y)

Colour:Orange-yellow
Hardness (Mohs):1
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Yttrotungstite-(Y)

Type:Biaxial (-)
RI values: nα = 1.890 nβ = 1.980 nγ = 2.020
2V:Measured: 68° , Calculated: 64°
Maximum Birefringence:δ = 0.130

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v strong

Chemical Properties of Yttrotungstite-(Y)

Formula:
YW
 
2
O
 
6
(OH)
 
3
Essential elements:H, O, W, Y
All elements listed in formula:H, O, W, Y

Relationship of Yttrotungstite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):
4.FD.05Spertiniite
Cu(OH)
 
2
4.FD.10Bracewellite
CrO(OH)
4.FD.10Diaspore
AlO(OH)
4.FD.10Goethite
α-Fe
3+
 
O(OH)
4.FD.10Groutite
Mn
3+
 
O(OH)
4.FD.10Guyanaite
CrO(OH)
4.FD.10Montroseite
(V,Fe)O(OH)
4.FD.10Tsumgallite
GaO(OH)
4.FD.15Manganite
Mn
3+
 
O(OH)
4.FD.20Yttrotungstite-(Ce)
(Ce,Nd,Y)W
 
2
O
 
6
(OH)
 
3
4.FD.25Frankhawthorneite
Cu
 
2
[(OH)
 
2
|TeO
 
4
]
4.FD.30Khinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
4.FD.30Parakhinite
Cu
 
3
Pb[(OH)
 
6
|TeO
 
4
]
Related Minerals - Hey's Index Grouping:
27.4.1Cuprotungstite
Cu
 
2
[(OH)
 
2
|WO
 
4
]
27.4.2Scheelite
Ca[WO
 
4
]
27.4.4Anthoinite
WAlO
 
3
(OH)
 
3
 (?)
27.4.5Mpororoite
AlWO
 
3
(OH)
 
3
·2H
 
2
O
27.4.7Yttrotungstite-(Ce)
(Ce,Nd,Y)W
 
2
O
 
6
(OH)
 
3
27.4.8Stolzite
Pb[WO
 
4
]
27.4.9Raspite
PbWO
 
4
27.4.10Russellite
(BiO)
 
2
[WO
 
4
]
27.4.11Pinalite
Pb
 
3
WO
 
3
Cl
 
2
27.4.12Uranotungstite
(Fe
2+
 
,Ba,Pb)(UO
 
2
)
 
2
[(OH)
 
4
|WO
 
4
] · 12H
 
2
O
27.4.13Hübnerite
MnWO
 
4
27.4.14Ferberite
FeWO
 
4
27.4.15Wolframite
(Fe
2+
 
)WO
 
4
 
 
to (Mn
2+
 
)WO
 
4
27.4.16Ferritungstite
(W,Fe
3+
 
)(O,OH)
 
3
27.4.17Phyllotungstite
Ca
 
x
[(W,Fe)(O,OH)
 
3
]·yH
 
2
O
27.4.18Qitianlingite
(Fe,Mn)
 
2
(Nb,Ta)
 
2
WO
 
10

Other Names for Yttrotungstite-(Y)

Synonyms:
Yttrotungstite
German names:
Yttrotungstit-(Y)
Russian names:
Иттротунгстит-(Y)

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 Yttrotungstite-(Y)

Reference List:Colonial Geol. and Min. Resources, London (1950): 1: 50-51.

American Mineralogist (1951) 36: 641.

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

Mineralogical Record (1981): 12: 81.

Internet Links for Yttrotungstite-(Y)

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  • Raman and XRD data at RRUFF project
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    Localities for Yttrotungstite-(Y)

    (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
    		[Colonial Geol. and Min. Resources, London (1950) 1, 50-51; MinRec 12:86]
    [MinRec 12:86]
    Mineral and/or Locality
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