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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
Huashi Au-Mo deposit, Xinglong County, Chengde, Hebei, 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 Huashi Au-Mo deposit, Xinglong County, Chengde, Hebei, China
Data Identifiers
Mindat Occurrence Record ID:1636264
Long-form Identifier:1:3:1636264:6
GUID (UUID V4):0
Nearest other occurrences of Biotite
9.7km (6.0 miles) ⓘXichanggou Mo deposit, Xinglong County, Chengde, Hebei, China
11.8km (7.3 miles) ⓘDongshan Au deposit, Jidong gold belt, Jizhou, Tianjin, China
17.4km (10.8 miles) ⓘTaipingcun Mo deposit, Xinglong County, Chengde, Hebei, China
22.8km (14.2 miles) ⓘDongshuichang B-Mn deposit, Jizhou, Tianjin, China
41.6km (25.9 miles) ⓘShachang Fe deposit, Miyun District, Beijing, China
56.6km (35.2 miles) ⓘShouwangfen Mine, Yingshouyingzikuang District, Chengde, Hebei, China
70.1km (43.6 miles) ⓘFengjiayu Fe deposit, Miyun District, Beijing, China
80.1km (49.8 miles) ⓘDetiangou Au deposit, Huairou District, Beijing, China
90.2km (56.0 miles) ⓘChaijiagou Mo deposit, Shuangqiao District, Chengde County, Chengde, Hebei, China
91.0km (56.6 miles) ⓘYu'erya Mine, Kuancheng County, Chengde, Hebei, China
References
Baode, Wang, Shuyin, Niu, Aiqun, Sun, Hongyang, Li (2003) Isotopic characteristics of mesozoic Au-Ag polymetallic ore deposits in northern Hebei and their ore-forming materials source. Chinese Journal of Geochemistry, 22 (3) 203-214 doi:10.1007/bf02842864
 
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