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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
Tuanjiegou Au deposit, Wulaga Mine, Jiayin County, Yichun, Heilongjiang, 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 Tuanjiegou Au deposit, Wulaga Mine, Jiayin County, Yichun, Heilongjiang, China
Data Identifiers
Mindat Occurrence Record ID:793298
Long-form Identifier:1:3:793298:4
GUID (UUID V4):0
Nearest other occurrences of Biotite
37.4km (23.3 miles) ⓘQingshui, Xinqing District, Yichun, Heilongjiang, China
65.3km (40.6 miles) ⓘYunshan Mine, Luobei County, Hegang, Heilongjiang, China
66.9km (41.5 miles) ⓘPoperechny Fe-Mn deposit, Jewish Autonomous Oblast, Russia
84.3km (52.4 miles) ⓘLuobei pegmatite field, Luobei County, Hegang, Heilongjiang, China
85.6km (53.2 miles) ⓘGaosongshan Au deposit, Xunke County, Heihe, Heilongjiang, China
89.0km (55.3 miles) ⓘSutara placers, Jewish Autonomous Oblast, Russia
94.5km (58.7 miles) ⓘKostenga Fe-Mn deposit, Jewish Autonomous Oblast, Russia
References
Changchun School of Metallurgy and Geology (1976): Geology and Prospecting 12(2), 18-29
Gao, Shen; Hofstra, Albert H.; Qin, Kezhang; Xu, Hong (2022) A case of Te-rich low-sulfidation epithermal Au-Ag deposits in a calc-alkaline magmatic arc, NE China. Ore Geology Reviews, 151. doi:10.1016/j.oregeorev.2022.105158
 
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