Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Biotite from
Demingding Mo-Cu deposit, Gyaca Co. (Jiacha Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China


Locality type:Deposit
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Demingding Mo-Cu deposit, Gyaca Co. (Jiacha Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
Data Identifiers
Mindat Occurrence Record ID:1514985
Long-form Identifier:1:3:1514985:3
GUID (UUID V4):0
Nearest other occurrences of Biotite
43.5km (27.1 miles) ⓘLongruri Au-Sb deposit (Nongruri Au-Sb deposit), Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
47.3km (29.4 miles) ⓘTangbula Mo-(Cu) deposit, Gongbo'gyamda Co. (Gongbujiangda Co.), Nyingtri Prefecture (Linzhi Prefecture), Tibet, China
57.3km (35.6 miles) ⓘSharang Mo deposit, Gongbo'gyamda Co. (Gongbujiangda Co.), Nyingtri Prefecture (Linzhi Prefecture), Tibet, China
60.3km (37.4 miles) ⓘYaguila Pb-Zn-Mo deposit, Gongbo'gyamda Co. (Gongbujiangda Co.), Nyingtri Prefecture (Linzhi Prefecture), Tibet, China
65.5km (40.7 miles) ⓘLuobusha ophiolite ("Luobusa ophiolite"), Qusum Co. (Qusong Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
74.4km (46.2 miles) ⓘBangpu Mo-Cu-polymetallic deposit, Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
78.7km (48.9 miles) ⓘDongzhongla Pb-Zn deposit, Gongbo'gyamda Co. (Gongbujiangda Co.), Nyingtri Prefecture (Linzhi Prefecture), Tibet, China
79.2km (49.2 miles) ⓘJiama Cu-polymetallic deposit (Gyama Cu-polymetallic deposit; Jiamachikang Cu-polymetallic deposit), Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
80.4km (50.0 miles) ⓘPanan W deposit, Nêdong Co. (Naidong Co.; Zedang Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
84.6km (52.6 miles) ⓘBangbu Au deposit, Gyaca Co. (Jiacha Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
References
Lu, Yigan, Kai Dong, Hui Zhou, and Zhuoyang Li. 2022. "Origin and Geodynamic Mechanism of the Tibetan Demingding Porphyry Mo (Cu) Deposit from Oceanic Subduction to Continental Collision" Minerals 12, no. 10: 1266. https://doi.org/10.3390/min12101266
Shi, Sudong, Chen, Shuyuan, Luo, Sangjiancuo, Ren, Huan, Jiang, Xiaojia (2024) Petrogenesis and Metallogenic Significance of the Demingding Mo-Cu Porphyry Deposit in the Gangdese Belt, Xizang: Insights from U-Pb and Re-Os Geochronology and Geochemistry. Minerals, 14 (12). doi:10.3390/min14121232
 
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: September 6, 2026 13:04:54
Go to top of page