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
Zhengchong Rb deposit, Jiuyishan Sn-W ore field, Dao Co., Yongzhou, Hunan, 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 Zhengchong Rb deposit, Jiuyishan Sn-W ore field, Dao Co., Yongzhou, Hunan, China
Data Identifiers
Mindat Occurrence Record ID:744904
Long-form Identifier:1:3:744904:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
36.7km (22.8 miles) ⓘWeijia W deposit, Dao Co., Yongzhou, Hunan, China
42.2km (26.3 miles) ⓘTongshanling Mine, Tongshanling ore field, Jiangyong Co., Yongzhou, Hunan, China
45.9km (28.5 miles) ⓘAntangling Mine, Tongshanling ore field, Jiangyong Co., Yongzhou, Hunan, China
67.0km (41.7 miles) ⓘMentouling deposit, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China
67.6km (42.0 miles) ⓘJianfengling Nb-Ta-Sn deposit, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China
67.9km (42.2 miles) ⓘLaiziling complex, Lianzhou City (Lian Co.), Qingyuan, Guangdong, China
70.5km (43.8 miles) ⓘGuposhan REE deposit, Guposhan Sn-polymetallic ore field, Jianghua Co., Yongzhou, Hunan, China
72.1km (44.8 miles) ⓘXianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China
72.4km (45.0 miles) ⓘXianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou, Hunan, China
72.7km (45.1 miles) ⓘLiguifu W-Sn deposit, Dupangling Sn ore field, Guanyang Co., Guilin, Guangxi, China
References
Xingyu Liao (2001): Geology and Prospecting 37(4), 18-22
Liu, X. H., Li, B., Xu, J. W., He, B., Liao, J., Peng, H. W., ... & Lai, J. Q. (2022). Monazite geochronology and geochemistry constraints on the formation of the giant Zhengchong Li-Rb-Cs deposit in South China. Ore Geology Reviews, 105147.
Liu, X. H., Li, B., Lai, J. Q., & Jiang, S. Y. (2022). Multistage in situ fractional crystallization of magma produced a unique rare metal enriched quartz-zinnwaldite-topaz rock. Ore Geology Reviews, 105203.
 
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