Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Mongolite

This page is currently not sponsored. Click here to sponsor this page.
The typical Mongolian landscape.

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

Classification of Mongolite

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
mindat.org URL:
http://www.mindat.org/min-2756.html
Please feel free to link to this page.

Type Occurrence of Mongolite

Year of Discovery:
1985

Physical Properties of Mongolite

Hardness (Mohs):
2

Crystallography of Mongolite

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

Optical Data of Mongolite

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 Mongolite

Formula:
Ca4Nb6Si5O24(OH)10 · nH2O
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,Al,Mn,Zn,Mg,Sr,Ba,Na,K

Relationship of Mongolite to other Species

9.HF.10LoudouniteNaCa5Zr4Si16O40(OH)11 · 8H2O
17.8.1EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2O
17.8.2MurmaniteNa2Ti2(Si2O7)O2 · 2H2O
17.8.3PerraultiteBaNaMn42+Ti2 (Si2O7)2O2(OH)2F
17.8.4Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2
17.8.6FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
17.8.7Nacareniobsite-(Ce)Na3Ca3(Ce,La,Nd)Nb(Si2O7)2OF3
17.8.8Nenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O
17.8.9Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O
17.8.10WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
17.8.11BelkoviteBa3(Nb,Ti)6(Si2O7)2O12
17.8.12BaotiteBa4(Ti,Nb)8Si4O28Cl
17.8.13Shcherbakovite(K,Ba)KNa(Ti,Nb)2(Si4O12)O2
17.8.14Ilímaussite-(Ce)(Na,K)7-8(Ba,K)10Ce5(Nb,Ti)6(Si3O9)4(Si9O18)O6(O,OH)24
17.8.15Komarovite(Ca,Mn)Nb2[O3|Si2O7] · 3.5H2O
17.8.16Manganbelyankinite(Mn,Ca)(Ti,Nb)5O12 · 9H2O
17.8.17Niobophyllite(K,Na)3(Fe,Mn)6(Nb,Ti)2Si8(O,OH,F)31
17.8.18Caesium-Kupletskite

Other Names for Mongolite

Name in Other Languages:
German:Mongolit
Spanish:Mongolita

Other Information

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 Mongolite

Reference List:
American Mineralogist (1986): 71: 1279.

Internet Links for Mongolite

Localities for Mongolite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
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  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 30, 2015 19:49:58 Page generated: May 22, 2015 20:08:50