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
Shuangqing Cu 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 Shuangqing Cu deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
Data Identifiers
Mindat Occurrence Record ID:1801802
Long-form Identifier:1:3:1801802:2
GUID (UUID V4):0
Nearest other occurrences of Biotite
60.5km (37.6 miles) ⓘYandong Cu deposit, Tuwu-Yandong copper ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
63.3km (39.3 miles) ⓘYanxi Cu deposit, Tuwu-Yandong copper ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
65.2km (40.5 miles) ⓘTuwu Mine, Tuwu-Yandong copper ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
67.3km (41.8 miles) ⓘShadong W-Mo deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
73.2km (45.5 miles) ⓘCihai iron mine, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
73.4km (45.6 miles) ⓘLinglong Cu deposit, Tuwu-Yandong copper ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
79.5km (49.4 miles) ⓘDonggebe W-Mo deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
79.8km (49.6 miles) ⓘChihu Mo-Cu deposit, Tuwu-Yandong copper ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
83.9km (52.2 miles) ⓘWeiquan Mine, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
89.0km (55.3 miles) ⓘYuxi Ag deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
References
Zhao, Liandang; Zheng, Xiaotong; Lu, Wanjian; Zhang, Shuanliang (2025) Geology and fluid evolution of the Shuangqing skarn copper deposit in the Eastern Tianshan. Ore Geology Reviews, 106800
 
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