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
Donggou Mo deposit, Ruyang County, Luoyang, Henan, 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 Donggou Mo deposit, Ruyang County, Luoyang, Henan, China
Data Identifiers
Mindat Occurrence Record ID:737691
Long-form Identifier:1:3:737691:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
15.0km (9.3 miles) ⓘYangyugou carbonatite, Song County, Luoyang, Henan, China
33.5km (20.8 miles) ⓘMarble outcrop, Lushan County, Pingdingshan, Henan, China
36.3km (22.6 miles) ⓘTieshanling Fe ore pit, Lushan County, Pingdingshan, Henan, China
36.6km (22.8 miles) ⓘYaochang Fe deposit, Lushan County, Pingdingshan, Henan, China
46.6km (29.0 miles) ⓘYuchiling Mo Mine, Song County, Luoyang, Henan, China
47.7km (29.6 miles) ⓘQiyugou Mine, Qiyugou ore field, Song County, Luoyang, Henan, China
48.1km (29.9 miles) ⓘGongyu Au deposit, Qiyugou ore field, Song County, Luoyang, Henan, China
48.6km (30.2 miles) ⓘHuaishuping Au deposit, Dongwan gold field, Song County, Luoyang, Henan, China
49.1km (30.5 miles) ⓘLeimengou Mo-Au deposit, Qiyugou ore field, Song County, Luoyang, Henan, China
52.3km (32.5 miles) ⓘMiaoling Au deposit, Dongwan gold field, Song County, Luoyang, Henan, China
References
Hongyi Ma, Chaoyong Huang, Anmin Ba, Hongli Li, and Fa'an Li (2006): Geology and Prospecting 42(5), 17-22
Junxing Zhao, Kezhang Qin, Guangming Li, and Jinxiang Li (2011): Characteristics of alteration and mineralization in the Sharang porphyry molybdenum deposit in the northern margin of Gangdese and comparison with typical porphyry molybdenum deposits in the world. Geology and Exploration 47(1), 54-70.
Mao, J.W.; Pirajno, F.; Xiang, J.F.; Gao, J.J.; Ye, H.S.; Li, Y.F.; Guo, B.J. (2011) Mesozoic molybdenum deposits in the east Qinling–Dabie orogenic belt: Characteristics and tectonic settings. Ore Geology Reviews, 43 (1). doi:10.1016/j.oregeorev.2011.07.009
Zhang, Yuanshuo; Yang, Li; Gui, Herong; Wang, Dejin; He, Mengqiu; He, Jun (2025) Molybdenite Re-Os Isotopic Ages of Two Late Mesozoic Giant Mo Deposits in the Eastern Qinling Orogenic Belt, Central China. Minerals, 15 (8). doi:10.3390/min15080800
 
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