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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Illite from
Hongtupu Cu-Zn-Au deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China


Locality type:Deposit
Classification
Species:Muscovite var: Illite
Formula:K0.65Al2.0[Al0.65Si3.35O10](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Illite data
Locality Data:Click here to view Hongtupu Cu-Zn-Au deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
Data Identifiers
Mindat Occurrence Record ID:1798697
Long-form Identifier:1:3:1798697:5
GUID (UUID V4):0
Nearest other occurrences of Illite
3.0km (1.8 miles) ⓘMeiling Cu-Au deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
9.4km (5.9 miles) ⓘKalatage Cu-Au deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
15.3km (9.5 miles) ⓘHongshan Au-Cu deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
78.8km (49.0 miles) ⓘSandaoling coal mine, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
82.8km (51.4 miles) ⓘSandaoling Mine, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
References
Zhao, Jiaxuan; Zhang, Dianming; Pu, Ligang; Shen, Juan; Yu, Xiaoliang; Wang, Yaoxuan; Xiao, Bing (2025) Alteration characteristics and short wavelength infrared (SWIR) spectroscopy of the Huangtupo Cu-Zn VMS deposit, NW China: Implications for ore genesis and exploration. Ore Geology Reviews, 186. 106886 doi:10.1016/j.oregeorev.2025.106886
 
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