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Tommotskii Massif, Tommot river, Selennyakh range, Cherskii range system, Polar Yakutia, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia

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(Томмотский массив)

Alkaline massif consist of intrusions of alkaline gabbroids and alkaline syenites.
Don't miss with Tommotskii massif of subalkaline syenites near Tommot settlement near Vilyui river on Aldan in Southern Yakutia.



References:
- Trunilina V.A., Parfenov L.M. e.a. (1996) Middlepaleozoic Tommotskii massif alkaline gabbroids and syenites of Verkhoyano-Kolyma mezozoides and its tectonic position, - Geologiya i Geofizika, N4, p. 71-82 (in Rus.)
- http://geo.stbur.ru/info/granites/st/st234.html




Group 4 - Oxides and Hydroxides
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
    Group 5 - Nitrates and Carbonates
  		• Kamphaugite-(Y)5.DC.10
    Ca(Y,REE)[OH|(CO
     
    3
    		)
     
    2
    		] · H
     
    2
    		O
  		• Tengerite-(Y)5.CC.10
    Y
     
    2
    		[CO
     
    3
    		]
     
    3
    		 · 2-3H
     
    2
    		O
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Fergusonite-(Y)7.GA.05
    YNbO
     
    4
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Apatite-(CaF)8.BN.05
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
  		• Monazite-(Ce)8.AD.50
    (Ce,La,Nd,Th)PO
     
    4
    Group 9 - Silicates
  		• Aegirine9.DA.25
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
  		• Britholite-(Ce)9.AH.25
    Ca
     
    2
    		(Ce,Ca)
     
    3
    		[(OH,F)|(SiO
     
    4
    		,PO
     
    4
    		)
     
    3
    		]
  		• 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
  		• Gadolinite-(Y)9.AJ.20
    Y
     
    2
    		Fe
    2+
     
    		Be
     
    2
    		[O|SiO
     
    4
    		]
     
    2
  		• Proshchenkoite-(Y) (TL)9.AJ.35
    (Y,REE,Ca,Na,Mn)
     
    15
    		Fe
    2+
     
    		Ca(P,Si)Si
     
    6
    		B
     
    3
    		O
     
    34
    		F
     
    14
  		• Thorite9.AD.30
    (Th,U)[SiO
     
    4
    		]
  		• Titanite9.AG.15
    CaTi[O|SiO
     
    4
    		]
  		• Yttrialite-(Y)9.BC.05
    (Y,Th)
     
    2
    		[Si
     
    2
    		O
     
    7
    		]
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]


    15 entries listed. 15 valid minerals.

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