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
Baishan Mo-Re deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, 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 Baishan Mo-Re deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
Data Identifiers
Mindat Occurrence Record ID:461737
Long-form Identifier:1:3:461737:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
6.8km (4.2 miles) ⓘJing'erquan pegmatite field, Huangshan-Jing'erquan ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
9.5km (5.9 miles) ⓘBaijiantan gabbroic intrusion, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
11.5km (7.2 miles) ⓘJing'erquan Cu-Ni deposit, Huangshan-Jing'erquan ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
15.6km (9.7 miles) ⓘTulargen area, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
17.9km (11.1 miles) ⓘHongling Mo Mine, Subei Co., Jiuquan, Gansu, China
81.0km (50.3 miles) ⓘXiaobaishitou Mo-W deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
81.1km (50.4 miles) ⓘSanchakou Cu deposit (Sanchalu Cu deposit), Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
84.1km (52.3 miles) ⓘShuangjingzi Fe deposit, Guazhou Co., Jiuquan, Gansu, China
92.0km (57.2 miles) ⓘHuangshandong Cu-Ni-PGE deposit (Huangshan East Cu-Ni-PGE deposit), Huangshan-Jing'erquan ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
94.1km (58.5 miles) ⓘBaishiquan Cu-Ni deposit, Baishiquan ore district, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
References
Dayu Zhang, Taofa Zhou, Feng Yuan, Yu Fan, Shuai Liu, and Wenjun Qu (2009): Mineral Deposits 28(5), 663-672
Li, Ning; Zhang, Zhi-Xin; Yang, Fu-Quan; Yang, Cheng-Dong; Liu, Dong-Na; Xie, Jin-Qiang; Hu, Yi-Ting (2025) Ore genesis and fluid evolution of the Xiaobaishitou skarn W–Mo deposit in East Tianshan, NW China: Insights from the geochemistry of garnet, scheelite, and apatite. Ore Geology Reviews, 186. 106911 doi:10.1016/j.oregeorev.2025.106911
 
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