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Umbite

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Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

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Formula:
K
 
2
(Zr,Ti)Si
 
3
O
 
9
·H
 
2
O
System:OrthorhombicColour:Colourless, light yellow
Lustre:VitreousHardness:4½
Name:Named after the Lake Umb, 20km east of the occurrence.
This page provides mineralogical data about Umbite.

Classification of Umbite

IMA status:Approved 1982
Strunz 8th edition ID:8/F.20-10
Nickel-Strunz 10th (pending) edition ID:9.DG.25

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th edition ID:59.2.1.1

59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
Hey's CIM Ref.:14.10.16

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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Type Occurrence of Umbite

Type Locality:Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1983

Physical Properties of Umbite

Lustre:Vitreous
Colour:Colourless, light yellow
Hardness (Mohs):4½

Crystallography of Umbite

Crystal System:Orthorhombic
Cell Parameters:a = 10.2Å, b = 13.24Å, c = 7.17Å
Ratio:a:b:c = 0.77 : 1 : 0.542
Unit Cell Volume:V 968.29 ų (Calculated from Unit Cell)

Optical Data of Umbite

Type:Biaxial (-)
RI values: nα = 1.596 nβ = 1.619 nγ = 1.630
2V:Measured: 80° , Calculated: 68°
Maximum Birefringence:δ = 0.034

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v weak

Chemical Properties of Umbite

Formula:
K
 
2
(Zr,Ti)Si
 
3
O
 
9
·H
 
2
O
Essential elements:H, K, O, Si, Zr
All elements listed in formula:H, K, O, Si, Ti, Zr
Common Impurities:Ti,Hf,Fe,Na,F

Relationship of Umbite to other Species

Related to:
  • Umbite Group
    • Related Minerals - Nickel-Strunz Grouping):
    9.DG.05Bustamite
    (Mn
    2+
     
    		,Ca)[SiO
     
    3
    		]
    9.DG.05Cascandite
    Ca(Sc,Fe
    3+
     
    		)[HSi
     
    3
    		O
     
    9
    		]
    9.DG.05Ferrobustamite
    Ca(Fe
    2+
     
    		,Ca,Mn
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    9.DG.05Pectolite
    NaCa
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
    9.DG.05Sérandite
    Na(Mn
    2+
     
    		,Ca)
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
    9.DG.05Wollastonite
    Ca[SiO
     
    3
    		]
    9.DG.05Wollastonite-1A
    CaSiO
     
    3
    9.DG.10Clinotobermorite
    Ca
     
    5
    		[Si
     
    3
    		O
     
    8
    		(OH)
     
    2
    		]2.4H
     
    2
    		O - Ca
     
    5
    		[Si
     
    6
    		O17]·5H
     
    2
    		O
    9.DG.10Plombièrite
    Ca
     
    5
    		Si
     
    6
    		O
     
    16
    		(OH)
     
    2
    		·7H
     
    2
    		O
    9.DG.10Riversideite
    Ca
     
    5
    		Si
     
    6
    		O
     
    16
    		(OH)
     
    2
    		·2H
     
    2
    		O
    9.DG.10Tobermorite
    Ca
     
    5
    		Si
     
    6
    		(O,OH)
     
    18
    		·5H
     
    2
    		O
    9.DG.15Foshagite
    Ca
     
    4
    		[(OH)
     
    2
    		|Si
     
    3
    		O
     
    9
    		]
    9.DG.20Jennite
    Ca
     
    9
    		H
     
    2
    		Si
     
    6
    		O
     
    18
    		(OH)
     
    8
    		·6H
     
    2
    		O
    9.DG.25Paraumbite
    K
     
    3
    		Zr
     
    2
    		H(Si
     
    3
    		O
     
    9
    		)
     
    2
    		·nH
     
    2
    		O
    9.DG.30Sørensenite
    Na
     
    4
    		SnBe
     
    2
    		Si
     
    6
    		O
     
    16
    		(OH)
     
    4
    9.DG.35Xonotlite
    Ca
     
    6
    		Si
     
    6
    		O
     
    17
    		(OH)
     
    2
    9.DG.40Hillebrandite
    Ca
     
    2
    		[(OH)
     
    2
    		|SiO
     
    3
    		]
    9.DG.45Zorite
    Na
     
    2
    		Ti(Si,Al)
     
    3
    		O
     
    9
    		·nH
     
    2
    		O
    9.DG.45Chivruaiite
    Ca
     
    3
    		Ti
     
    5
    		[(Si
     
    6
    		O
     
    17
    		)
     
    2
    		|O(OH)
     
    4
    		]·14H
     
    2
    		O
    9.DG.50Haineaultite
    (Na,Ca)
     
    5
    		Ca(Ti,Nb)
     
    5
    		(OH,F)
     
    4
    		|Si
     
    6
    		O
     
    17
    		]
     
    2
    		 · 5H
     
    2
    		O
    9.DG.55Epididymite
    NaBeSi
     
    3
    		O
     
    7
    		OH
    9.DG.60Eudidymite
    NaBeSi
     
    3
    		O
     
    7
    		OH
    9.DG.65Elpidite
    Na
     
    2
    		ZrSi
     
    6
    		O
     
    15
    		·3H
     
    2
    		O
    9.DG.70Fenaksite
    (K,Na)
     
    4
    		(Fe,Mn)
     
    2
    		(Si
     
    4
    		O
     
    10
    		)
     
    2
    		(OH,F)
    9.DG.70Litidionite
    CuNaKSi
     
    4
    		O
     
    10
    9.DG.70Manaksite
    KNaMnSi
     
    4
    		O
     
    10
    9.DG.75Tinaksite
    K
     
    2
    		Na(Ca,Mn
    2+
     
    		)
     
    2
    		Ti[O|Si
     
    7
    		O
     
    18
    		(OH)]
    9.DG.75Tokkoite
    K
     
    2
    		Ca
     
    4
    		Si
     
    7
    		O
     
    17
    		(O,OH,F)
     
    4
    9.DG.75Senkevichite
    CsKNaCa
     
    2
    		Ti[O|Si
     
    7
    		O
     
    18
    		(OH)]
    9.DG.80Canasite
    Ca
     
    5
    		Na
     
    4
    		K
     
    2
    		(Si
     
    12
    		O
     
    30
    		(OH,F)
     
    4
    9.DG.80Fluorcanasite
    K
     
    3
    		Na
     
    3
    		Ca
     
    5
    		Si
     
    12
    		O
     
    30
    		F
     
    4
    		·H
     
    2
    		O
    9.DG.85Miserite
    K(Ca,Ce)
     
    4
    		Si
     
    5
    		O
     
    13
    		(OH)
     
    3
    9.DG.90Charoite
    (K,Na)
     
    5
    		(Ca,Ba,Sr)
     
    8
    		(Si
     
    6
    		O
     
    15
    		)
     
    2
    		(Si
     
    6
    		O
     
    16
    		)(OH,F)·H
     
    2
    		O
    9.DG.90Frankamenite
    K
     
    3
    		Na
     
    3
    		Ca
     
    5
    		(Si
     
    12
    		O
     
    30
    		)[F,(OH)]
     
    4
    		·H
     
    2
    		O
    9.DG.95Yuksporite
    (K,Ba)NaCa
     
    2
    		(Si,Ti)
     
    4
    		O
     
    11
    		(F,OH)·H
     
    2
    		O
    9.DG.95Eveslogite
    (Na,K,Ca,Sr,Ba)
     
    48
    		 [(Ti,Nb,Mn,Fe
    2+
     
    		)
     
    12
    		Si
     
    48
    		O
     
    144
    		(OH)
     
    12
    		](F,OH,Cl)
     
    14
    Related Minerals - Hey's Index Grouping:
    14.10.1Zircon
    Zr[SiO
     
    4
    		]
    14.10.2Hafnon
    (Hf,Zr)[SiO
     
    4
    		]
    14.10.3Zektzerite
    LiNa(Zr,Ti,Hf)Si
     
    6
    		O
     
    15
    14.10.4Parakeldyshite
    Na
     
    2
    		ZrSi
     
    2
    		O
     
    7
    14.10.5Vlasovite
    Na
     
    2
    		ZrSi
     
    4
    		O
     
    11
    14.10.6Keldyshite
    (Na,H)
     
    2
    		ZrSi
     
    2
    		O
     
    7
    14.10.7Gaidonnayite
    Na
     
    2
    		Zr[Si
     
    3
    		O
     
    9
    		]·2H
     
    2
    		O
    14.10.8Terskite
    Na
     
    4
    		ZrSi
     
    6
    		O
     
    16
    		·2H
     
    2
    		O
    14.10.9Elpidite
    Na
     
    2
    		ZrSi
     
    6
    		O
     
    15
    		·3H
     
    2
    		O
    14.10.10Hilairite
    Na
     
    2
    		Zr[SiO
     
    3
    		]
     
    3
    		·3H
     
    2
    		O
    14.10.11Petarasite
    Na
     
    5
    		Zr
     
    2
    		[(OH,Cl)|Si
     
    6
    		O
     
    18
    		]·2H
     
    2
    		O
    14.10.12Khibinskite
    K
     
    2
    		ZrSi
     
    2
    		O
     
    7
    14.10.13Wadeite
    K
     
    2
    		Zr[Si
     
    3
    		O
     
    9
    		]
    14.10.14Dalyite
    K
     
    2
    		ZrSi
     
    6
    		O
     
    15
    14.10.15Kostylevite
    K
     
    2
    		ZrSi
     
    3
    		O
     
    9
    		·H
     
    2
    		O
    14.10.17Paraumbite
    K
     
    3
    		Zr
     
    2
    		H(Si
     
    3
    		O
     
    9
    		)
     
    2
    		·nH
     
    2
    		O
    14.10.18Georgechaoite
    NaKZr[Si
     
    3
    		O
     
    9
    		]·2H
     
    2
    		O
    14.10.19Gittinsite
    CaZr[Si
     
    2
    		O
     
    7
    		]
    14.10.20Calciocatapleiite
    CaZrSi
     
    3
    		O
     
    9
    		·2H
     
    2
    		O
    14.10.21Calciohilairite
    CaZr[SiO
     
    3
    		]
     
    3
    		·3H
     
    2
    		O
    14.10.22Armstrongite
    CaZr[Si
     
    6
    		O
     
    15
    		]·3H
     
    2
    		O
    14.10.23Lemoynite
    (Na,K)
     
    2
    		CaZr
     
    2
    		Si
     
    10
    		O
     
    26
    		·5H
     
    2
    		O
    14.10.24Catapleiite
    Na
     
    2
    		Zr[Si
     
    3
    		O
     
    9
    		]·2H
     
    2
    		O
    14.10.25Baghdadite
    Ca
     
    3
    		(Zr,Ti)[O
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    14.10.26Lovozerite
    (Na,Ca)
     
    3
    		(Zr,Ti)[Si
     
    6
    		(O,OH)
     
    18
    		]
    14.10.27Låvenite
    (Na,Ca)
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)(Zr,Ti)[(O,OH,F)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    14.10.28Penkvilksite
    (Na,Ca)
     
    4
    		(Ti,Zr)
     
    2
    		Si
     
    8
    		O
     
    22
    		·5H
     
    2
    		O
    14.10.29Darapiosite
    KNa
     
    2
    		Li(Mn,Zn)
     
    2
    		ZrSi
     
    12
    		O
     
    30
    14.10.30Bazirite
    BaZr[Si
     
    3
    		O
     
    9
    		]
    14.10.31Komkovite
    BaZr[Si
     
    3
    		O
     
    9
    		]·3H
     
    2
    		O
    14.10.32Zirsinalite
    Na
     
    6
    		(Ca,Mn
    2+
     
    		,Fe
    2+
     
    		)Zr[Si
     
    6
    		O
     
    18
    		]
    14.10.33Tranquillityite
    (Fe
    2+
     
    		,Ca)
     
    8
    		(Zr,Y)
     
    2
    		Ti
     
    3
    		[O
     
    4
    		|SiO
     
    4
    		]
     
    3

    Other Names for Umbite

    Synonyms:
    IMA1982-006
    German names:
    Umbit
    Russian names:
    Умбит
    Spanish names:
    Umbita

    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 Umbite

    Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1983): 112: 461-469.

    American Mineralogist (1984): 69: 813-814.

    European Journal of Solid State Inorganic Chemistry: 34: 381-390.

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    Localities for Umbite

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    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		No reference listed
    Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    [Clark, 1993 - "Hey's Mineral Index"]
    Lapis 29(2), 41 (2004)
    Pavel M. Kartashov data
    Mineral and/or Locality
    Google
     
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