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Tat'yana pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag Massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia

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The "Tat'yana" peralkaline granitic pegmatite is located on the eastern slope of Mount Ulyn Khuren, 55 km NE of the city of Kobdo. Named in honour of Ta'yana Gavrilova of Ulan Ude who discovered this pegmatite characterised by a rich beryllium mineralization.
Position, morphology and mineralization of this pegmatite were described by Kartashov et al. (1993).

Ref.:
Kartashov P.M., Voloshin A.V., Pakhomovskii, Ya.A. (1993): On the zonal crystaline gadolinite from the alkaline granite pegmatites of Haldzan Buragtag (Mongolian Altai). - Zapiski VMO, N3, 65-79.





Map Reference: 48°32'20"N , 92°55'30"E

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Group 2 - Sulphides and Sulfosalts
  		• Pyrite2.EB.05a
    FeS
     
    2
    Group 4 - Oxides and Hydroxides
  		• Fersmite4.DG.05
    (Ca,Ce,Na)(Nb,Ta,Ti)
     
    2
    		(O,OH,F)
     
    6
  		• Quartz4.DA.05
    SiO
     
    2
    Group 5 - Nitrates and Carbonates
  		• Calcite5.AB.05
    CaCO
     
    3
  		• Hydroxylbastnäsite-(Ce)5.BD.20a
    (Ce,La)[(OH,F)|CO
     
    3
    		]
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Fergusonite-(Y)7.GA.05
    YNbO
     
    4
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Xenotime-(Y)8.AD.35
    YPO
     
    4
    Group 9 - Silicates
  		• Aegirine9.DA.25
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
  		• Aenigmatite9.DH.40
    Na
     
    2
    		Fe
    2+
    5
    		TiO
     
    2
    		(Si
     
    6
    		O
     
    18
    		)
  		• Allanite-(Ce)9.BG.05
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Arfvedsonite9.DE.25
    [Na][Na
     
    2
    		][Fe
    2+
    4
    		Fe
    3+
     
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
  		• Bavenite9.DF.25
    Ca
     
    4
    		Be
     
    2
    		Al
     
    2
    		Si
     
    9
    		O
     
    26
    		(OH)
     
    2
  		• Chevkinite-(Ce)9.BE.70
    (Ce,La,Ca,Th)
     
    4
    		(Fe
    2+
     
    		,Mg)(Fe
    2+
     
    		,Ti,Fe
    3+
     
    		)
     
    2
    		(Ti,Fe
    3+
     
    		)
     
    2
    		[O
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
     
    2
  		• Clinochlore9.EC.55
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Epidote9.BG.05
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Eudialyte9.CO.10
    Na
     
    15
    		Ca
     
    6
    		(Fe
    2+
     
    		,Mn
    2+
     
    		)
     
    3
    		Zr
     
    3
    		[Si
     
    25
    		O
     
    73
    		](O,OH,H
     
    2
    		O)
     
    3
    		(OH,Cl)
     
    2
  		• Gadolinite-(Y)9.AJ.20
    Y
     
    2
    		Fe
    2+
     
    		Be
     
    2
    		[O|SiO
     
    4
    		]
     
    2
  		• Genthelvite9.FB.10
    Zn
     
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
  		• Hingganite-(Ce)9.AJ.20
    (Ce,REE)
     
    2
    		(□,Fe
    2+
     
    		)Be
     
    2
    		[SiO
     
    4
    		]
     
    2
    		(OH)
     
    2
  		• Hingganite-(Y)9.AJ.20
    (Y,REE,Ca)
     
    2
    		(□,Fe
    2+
     
    		)Be
     
    2
    		[SiO
     
    4
    		]
     
    2
    		(OH)
     
    2
  		• Ilvaite9.BE.07
    CaFe
    2+
    2
    		Fe
    3+
     
    		[O|OH|Si
     
    2
    		O
     
    7
    		]
  		• Microcline9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Stilpnomelane9.EG.40
    (K,Ca,Na)(Fe
    2+
     
    		,Mg,Al,Fe
    3+
     
    		)
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    36
    		 · nH
     
    2
    		O
  		• Thorite9.AD.30
    (Th,U)[SiO
     
    4
    		]
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]
    Unclassified Minerals
  		• Calciogadolinite-(Y)-
    (YCa)
     
    2
    		Fe
    3+
     
    		Be
     
    2
    		[SiO
     
    4
    		]
     
    2
    		(OH)
     
    2


    26 entries listed. 25 valid minerals.

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