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
Lakang'e Cu deposit, Dagzê Co. (Dazi Co.), Lhasa, 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 Lakang'e Cu deposit, Dagzê Co. (Dazi Co.), Lhasa, Tibet, China
Data Identifiers
Mindat Occurrence Record ID:452685
Long-form Identifier:1:3:452685:8
GUID (UUID V4):0
Nearest other occurrences of Biotite
5.6km (3.5 miles) ⓘQiangdui Cu-Mo deposit, Dagzê Co. (Dazi Co.), Lhasa, Tibet, China
16.1km (10.0 miles) ⓘKelu Cu-Au deposit (Keru Cu-Au deposit), Zhanang Co., Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
22.0km (13.7 miles) ⓘZhibula Cu deposit, Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
23.6km (14.7 miles) ⓘQulong Cu-(Mo) deposit, Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
30.8km (19.2 miles) ⓘDuodigou Mo deposit, Chengguan District, Lhasa, Tibet, China
42.8km (26.6 miles) ⓘZegulangbei deposit, Jiama Cu-polymetallic deposit (Gyama Cu-polymetallic deposit; Jiamachikang Cu-polymetallic deposit), Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
44.0km (27.3 miles) ⓘNuri Cu-Mo-W deposit, Nêdong Co. (Naidong Co.; Zedang Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
46.8km (29.1 miles) ⓘNanmu Cu-(Mo) deposit, Qüxü Co. (Qushui Co.), Lhasa, Tibet, China
47.0km (29.2 miles) ⓘShuangbujiere Cu deposit, Nêdong Co. (Naidong Co.; Zedang Co.), Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture), Tibet, China
48.0km (29.8 miles) ⓘJiama Cu-polymetallic deposit (Gyama Cu-polymetallic deposit; Jiamachikang Cu-polymetallic deposit), Maizhokunggar Co. (Mozhugongka Co.), Lhasa, Tibet, China
References
pubs.usgs.gov (2006) http://pubs.usgs.gov/of/2005/1060/PorCu.txt
Qi, Jing; Chi, Guoxiang; Tang, Juxing; Wang, Yumeng; Tang, Pan; Wang, Mengdie (2025) In-situ trace element and sulfur isotope analyses of sulfides as indicators of ore-forming fluid evolution in the Lakang’e porphyry Mo-Cu deposit, Tibet, China. Ore Geology Reviews, 183. 106690 doi:10.1016/j.oregeorev.2025.106690
 
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