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Mongolite

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The typical Mongolian landscape.

Hovd Aimag, Mongolia
Formula:
Ca4Nb6Si5O24(OH)10 · nH2O
Hardness:
2
Crystal System:
Tetragonal
Name:
Named after the country of origin.
This page provides mineralogical data about Mongolite.


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Classification of MongoliteHide

Approved
9.HF.05

9 : SILICATES (Germanates)
H : Unclassified silicates
F : With Nb, Ta, Zr
56.2.4.15

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
17.8.5

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

Pronounciation of MongoliteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MongoliteHide

Hardness:

Optical Data of MongoliteHide

Type:
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

Formula:
Ca4Nb6Si5O24(OH)10 · nH2O
IMA Formula:
Ca4Nb6Si5O24(OH)10 · 6H2O
Common Impurities:
Ti,Al,Mn,Zn,Mg,Sr,Ba,Na,K

Crystallography of MongoliteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 7 Å, c = 29.01 Å
Ratio:
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

German:Mongolit
Spanish:Mongolita

Common AssociatesHide

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

Related Minerals - Nickel-Strunz GroupingHide

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

Related Minerals - Dana Grouping (8th Ed.)Hide

56.2.4.1BaghdaditeCa3(Zr,Ti)(Si2O7)O2Mon.
56.2.4.2BurpaliteNa2CaZr(Si2O7)F2Mon.
56.2.4.3CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
56.2.4.4Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2Mon. 2/m : P21/b
56.2.4.5WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2Mon. 2 : P21
56.2.4.6Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon.
56.2.4.7Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
56.2.4.8RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
56.2.4.9Hainite-(Y)Na2Ca4(Y,REE)Ti(Si2O7)2OF3Tric. 1 : P1
56.2.4.10Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2Mon. 2/m : P21/m
56.2.4.11JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
56.2.4.12Komarovite(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2OOrth.
56.2.4.13Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.
56.2.4.14SuoluniteCa2(H2Si2O7) · 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
17.8.4Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon.
17.8.6FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3Tric.
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
17.8.11BelkoviteBa3(Nb,Ti)6(Si2O7)2O12Hex.
17.8.12BaotiteBa4(Ti,Nb)8Si4O28ClTet. 4/m : I41/a
17.8.13Shcherbakovite(K,Ba)KNa(Ti,Nb)2(Si4O12)O2Orth.
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
17.8.17Niobophyllite(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31Tric.
17.8.18Caesium-Kupletskite(Cs,K,Na)3(Mn,Fe2+)7(Ti,Nb)2Si8O24(O,OH,F)7

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.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • 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
Mineral and/or Locality  
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