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The typical Mongolian landscape.

Hovd Aimag, Mongolia
Ca4Nb6Si5O24(OH)10 · nH2O
Crystal System:
Named after the country of origin.
This page provides mineralogical data about Mongolite.

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Classification of MongoliteHide


9 : SILICATES (Germanates)
H : Unclassified silicates
F : With Nb, Ta, Zr

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination

17 : Silicates Containing other Anions
8 : Silicates with niobate or tantalate

Pronounciation of MongoliteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MongoliteHide


Optical Data of MongoliteHide

Uniaxial (-)
RI values:
nω = 1.800 nε = 1.740
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of MongoliteHide

Ca4Nb6Si5O24(OH)10 · nH2O
IMA Formula:
Ca4Nb6Si5O24(OH)10 · 6H2O
Common Impurities:

Crystallography of MongoliteHide

Crystal System:
Cell Parameters:
a = 7 Å, c = 29.01 Å
a:c = 1 : 4.144
Unit Cell V:
1,421.49 ų (Calculated from Unit Cell)

Type Occurrence of MongoliteHide

Synonyms of MongoliteHide

Other Language Names for MongoliteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz7 photos of Mongolite associated with Quartz on
Kovalenkoite5 photos of Mongolite associated with Kovalenkoite on
Arfvedsonite1 photo of Mongolite associated with Arfvedsonite on

Related Minerals - Nickel-Strunz GroupingHide

9.HF.10LoudouniteNaCa5Zr4Si16O40(OH)11 · 8H2O

Related Minerals - Dana Grouping (8th Ed.)Hide,Ti)(Si2O7)O2Mon.,OH)2Mon. 2/m : P21/båvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/böhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21,Nb)4(Si2O7)(O,OH,F)2Mon.,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric. 1 : P1,REE)Ti(Si2O7)2OF3Tric. 1 : P1,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2Mon. 2/m : P21/m · 8H2OTric.,Mn)Nb2[O3|Si2O7] · 3.5H2OOrth.,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth. · H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.8.1EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2OTric.
17.8.2MurmaniteNa2Ti2(Si2O7)O2 · 2H2OTric.
17.8.3PerraultiteBaNaMn2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m : B2/m
17.8.7Nacareniobsite-(Ce)NbNa3Ca3(Ce,REE )(Si2O7)2OF3Mon.
17.8.8Nenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pbam
17.8.9Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.
17.8.10WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21
17.8.12BaotiteBa4Ti8Si4O28ClTet. 4/m : I41/a
17.8.14Ilímaussite-(Ce)(Na,K)7-8(Ba,K)10Ce5(Nb,Ti)6(Si3O9)4(Si9O18)O6(O,OH)24Trig. 3 2 : R3 2
17.8.15Komarovite(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2OOrth.
17.8.16Manganbelyankinite(Mn,Ca)(Ti,Nb)5O12 · 9H2O

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 MongoliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1986): 71: 1279.

Internet Links for MongoliteHide

Localities for MongoliteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Mongolia (TL)
  • Gobi Desert
    • Khan Bogdo Massif (Khan-Bogdinskii)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (Proceedings of the Russian Mineralogical Society) (and Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva) (1985): 114, 374-377.
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
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
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