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
Zhuopan alkaline complex, Yongping County, Dali, Yunnan, China


Locality type:Complex
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 Zhuopan alkaline complex, Yongping County, Dali, Yunnan, China
Data Identifiers
Mindat Occurrence Record ID:1976376
Long-form Identifier:1:3:1976376:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
11.6km (7.2 miles) ⓘZhuopan, Yunlong County, Dali, Yunnan, China
27.5km (17.1 miles) ⓘJinchanghe Mine, Longyang District, Baoshan, Yunnan, China
28.3km (17.6 miles) ⓘTiechang Sn deposit (Yunlong Sn deposit), Lancang river valley (Lancangjiang valley; Mekong valley), Yunlong County, Dali, Yunnan, China
46.3km (28.8 miles) ⓘAlin Au deposit, Shuixie Cu–Co ore field, Yongping County, Dali, Yunnan, China
51.6km (32.0 miles) ⓘShiganghe Sn-W deposit, Yunlong County, Dali, Yunnan, China
70.3km (43.7 miles) ⓘDatongchang Sn-Pb-Zn deposit (Dadongchang Sn-Pb-Zn deposit), Tengchong Sn belt, Tengchong County, Baoshan, Yunnan, China
95.6km (59.4 miles) ⓘGudong Sn deposit, Tengchong Sn belt, Tengchong County, Baoshan, Yunnan, China
96.3km (59.8 miles) ⓘShuangmacao Au deposit, Machangqing Cu-Mo-Au ore field (Baoxingchang Cu-Mo-Au ore field), Midu County, Dali, Yunnan, China
99.5km (61.8 miles) ⓘBaoxingchang ore block, Machangqing Mine, Machangqing Cu-Mo-Au ore field (Baoxingchang Cu-Mo-Au ore field), Midu County, Dali, Yunnan, China
References
Liu, Zheng; Sun, Lin; Zhang, Wei; Yan, Qing-He; Wang, Guo-Chang; Liu, Hao; Zhang, Han; Yang, Yan (2026) Controls on REE enrichment in post-collisional alkaline rocks by subduction-related metasomatism: insights from the Zhuopan Complex, southeastern Tibetan plateau. Ore Geology Reviews, 196. p.107445. doi:10.1016/j.oregeorev.2026.107445
 
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