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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Biotite from
Murong pegmatite-type Li deposit, Yajiang County, Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, 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 Murong pegmatite-type Li deposit, Yajiang County, Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, China
Data Identifiers
Mindat Occurrence Record ID:1712155
Long-form Identifier:1:3:1712155:0
GUID (UUID V4):0
Nearest other occurrences of Biotite
14.5km (9.0 miles) Jiajika Mine, Kangding pegmatite field, Yajiang County, Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, China
15.0km (9.3 miles) Rongxuka Li deposit, Yajiang County, Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, China
78.3km (48.6 miles) Zhengziyanwo ore block, Yangliuping Cu-Ni-PGE deposit, Yangliuping Cu-Ni-PGE ore field, Danba Co., Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, China
84.0km (52.2 miles) Dulanggou Au deposit, Xintaizi Au ore field, Danba Co., Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture), Sichuan, China
References
 
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