Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Niobochevkinite from
Ust'-Biraya, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area (Chara Basin), Vitim Plateau, Irkutsk Oblast, Russia


Classification
Species:Chevkinite-(Ce) var: Niobochevkinite
Formula:(Ce,La,Ca,Th)4Fe2+(Fe2+,Ti,Fe3+)2(Ti,Nb,Fe3+)2[Si2O7]2O8
Comments:Rounded black crystals up to 2 mm and more later formed tabular brown crystals up to 0.3 mm with Nb2O5 in range 5-15 mas.%. It was found in border melanocrate part of "Cordilitovaya" carbonatite vein.
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-EDS
Data
Mineral Data:Click here to view Niobochevkinite data
Locality Data:Click here to view Ust'-Biraya, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area (Chara Basin), Vitim Plateau, Irkutsk Oblast, Russia
Data Identifiers
Mindat Occurrence Record ID:852630
Long-form Identifier:1:3:852630:4
GUID (UUID V4):0
References
Pavel M. Kartashov analytical data 2002
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 14, 2026 02:21:55
Go to top of page