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.
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Biotite from
Banmiaozi Au deposit, Jiapigou auriferous greenstone belt, Jiapigou ore field, Huadian City, Jilin, Jilin, 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 Banmiaozi Au deposit, Jiapigou auriferous greenstone belt, Jiapigou ore field, Huadian City, Jilin, Jilin, China
Data Identifiers
Mindat Occurrence Record ID:1833332
Long-form Identifier:1:3:1833332:9
GUID (UUID V4):0
Nearest other occurrences of Biotite
6.8km (4.2 miles) ⓘLaoniugou Fe deposit (Laoniuguo Fe deposit), Huadian City, Jilin, Jilin, China
14.0km (8.7 miles) ⓘSandaocha Mine, Jiapigou ore field, Huadian City, Jilin, Jilin, China
15.8km (9.8 miles) ⓘSandaotong Cu deposit, Huadian City, Jilin, Jilin, China
22.5km (14.0 miles) ⓘErdaodianzi Au-(Ag-Cu) deposit, Huadian City, Jilin, Jilin, China
31.9km (19.8 miles) ⓘBinghugou Au deposit, Liuhe orefield, Jiapigou ore field, Huadian City, Jilin, Jilin, China
34.4km (21.4 miles) ⓘHuangnihe pluton, Dunhua City, Yanbian Chaoxianzu, Jilin, China
34.5km (21.4 miles) ⓘLiupiyegou Mine, Jiapigou ore field, Huadian City, Jilin, Jilin, China
36.5km (22.7 miles) ⓘNaizhigou Au deposit, Jiapigou ore field, Huadian City, Jilin, Jilin, China
52.8km (32.8 miles) ⓘSongjianghe Au deposit, Dunhua City, Yanbian Chaoxianzu, Jilin, China
53.2km (33.1 miles) ⓘTianhexing porphyry CuMo deposit, Jingyu County, Baishan, Jilin, China
References
Wang, Shu; Sun, Jinggui; Han, Jilong; Zhang, Xiaotian; Zhang, Xinwen; Lin, Zuochao (2025) Genesis and metallogenic geodynamic background of the Banmiaozi gold deposit in the Jiapigou mining district, Jilin Province: Evidence from geology, ore-fluid, isotope geochemistry and metallogenic chronology. Ore Geology Reviews, 187. 106940 doi:10.1016/j.oregeorev.2025.106940
 
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