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
Luerma porphyry Cu deposit, Coqên Co. (Cuoqin Co.), Ngari, Tibet, 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 Luerma porphyry Cu deposit, Coqên Co. (Cuoqin Co.), Ngari, Tibet, China
Data Identifiers
Mindat Occurrence Record ID:1587219
Long-form Identifier:1:3:1587219:1
GUID (UUID V4):0
Nearest other occurrences of Biotite
46.5km (28.9 miles) ⓘChagele Pb-Zn deposit, Nyima Co. (Nima Co.), Nagqu, Tibet, China
53.6km (33.3 miles) ⓘLonggen Pb-Zn deposit, Ngamring Co. (Angren Co.), Xigazê Prefecture (Rikaze Prefecture; Shigatse Prefecture), Tibet, China
80.4km (49.9 miles) ⓘMuzhiding Fe deposit (Nixiong Fe deposit; Nyixung Fe deposit), Nixiong Fe-Cu ore field (Nyixung Fe-Cu ore field), Coqên Co. (Cuoqin Co.), Ngari, Tibet, China
References
Liu, Hong; Huang, Hanxiao; Li, Guangming; Li, Wenchang; Zhang, Linkui; Lan, Shuangshuang; Lü, Menghong; Song, Wenjie (2023) Subduction-related Late Triassic Luerma porphyry copper deposit, western Gangdese, Tibet, China: Evidence from geology, geochemistry, and geochronology. Ore Geology Reviews, 154. doi:10.1016/j.oregeorev.2022.105253
 
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