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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Illite from
Aolunhua Mo-Cu deposit, Ar Horqin Banner (Aluke'erqin Co.), Chifeng City (Ulanhad League; Chifeng Prefecture), Inner Mongolia, China


Locality type:Deposit
Classification
Species:Muscovite var: Illite
Formula:K0.65Al2.0[Al0.65Si3.35O10](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Illite data
Locality Data:Click here to view Aolunhua Mo-Cu deposit, Ar Horqin Banner (Aluke'erqin Co.), Chifeng City (Ulanhad League; Chifeng Prefecture), Inner Mongolia, China
Data Identifiers
Mindat Occurrence Record ID:738376
Long-form Identifier:1:3:738376:2
GUID (UUID V4):0
Nearest other occurrences of Illite
88.6km (55.1 miles) ⓘShuangjianzishan Ag-polymetallic deposit, Bairin Left Banner (Balin Zuoqi), Chifeng City (Ulanhad League; Chifeng Prefecture), Inner Mongolia, China
References
Qiao Xu, Shuixing Fu, Jiming Yuan, Longjun Lin, and Haiping Guo (2010): Geology and Exploration 46(6), 1019-1027
Mei Zhang, Yusheng Zhai, Cunli Shen, Yonghui Liu, Shuaishi Yang, Degao Zhai, Meijuan Yao, Jianping Wang, Shouguang Wang, Zhengxi Gao, and Ling Zhang (2011): Geoscience 25(5), 819-831
 
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