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
Pegmatite No. 31, Nanping pegmatite field, Yanping District, Nanping, Fujian, China


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 Pegmatite No. 31, Nanping pegmatite field, Yanping District, Nanping, Fujian, China
Data Identifiers
Mindat Occurrence Record ID:1893590
Long-form Identifier:1:3:1893590:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
34.1km (21.2 miles) ⓘBawaiyang Pb-Zn deposit, Jian'ou City, Nanping, Fujian, China
46.6km (29.0 miles) ⓘFengyan Zn-Pb-Ag deposit, Meixian Pb-Zn-(Ag) ore field, Youxi County, Sanming, Fujian, China
57.6km (35.8 miles) ⓘDingjiashan Pb-Zn-(Ag) deposit, Meixian Pb-Zn-(Ag) ore field, Youxi County, Sanming, Fujian, China
57.8km (35.9 miles) ⓘShangfang W deposit, Jian'ou City, Nanping, Fujian, China
67.8km (42.1 miles) ⓘLongtougang Cu-Zn deposit, Youxi County, Sanming, Fujian, China
83.8km (52.1 miles) ⓘShuangqishan Mine, Youxi County, Sanming, Fujian, China
84.8km (52.7 miles) ⓘShuiji Pb-Zn-(Ag) deposit, Jianyang District, Nanping, Fujian, China
85.6km (53.2 miles) ⓘXiaoban Au deposit, Dehua Co., Quanzhou, Fujian, China
89.7km (55.8 miles) ⓘTangquan Fe deposit, Datian County, Sanming, Fujian, China
91.1km (56.6 miles) ⓘYangfang complex, Mingxi County, Sanming, Fujian, China
References
Que, Yihong; Zheng, Jiahao; Feng, Wanyi; Zhang, Huichao (2026) The Fluid Characteristics, Metallogenic Chronology and Ore-Forming Mechanism of the Nanping Granitic Pegmatite-Type Nb-Ta Deposit, Southeast China. Minerals, 16 (3). doi:10.3390/min16030285
 
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