Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Muscovite from
Hongjianbingshan W deposit, Subei Co., Jiuquan, Gansu, China


Locality type:Deposit
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Age information
Maximum recorded age:216.6 ± 1.6 Ma
Minimum recorded age:216.6 ± 1.6 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
1216.6 ± 1.6 MaLate/Upper Triassic - Ar-Ar
Sample references:
1 -
Han C, Xiao W, Zhao G, Sun M, Qu W, Du A (2014): Re-Os geochronology on molybdenites from the Donggebi Mo Deposit in the Eastern Tianshan of the Central Asia Orogenic Belt and its geological significance. Resource Geology 64 (2) 136-148.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Hongjianbingshan W deposit, Subei Co., Jiuquan, Gansu, China
Data Identifiers
Mindat Occurrence Record ID:458148
Long-form Identifier:1:3:458148:2
GUID (UUID V4):0
Nearest other occurrences of Muscovite
31.2km (19.4 miles) ⓘHeihushan Cu deposit, Subei Co., Jiuquan, Gansu, China
37.9km (23.6 miles) ⓘNanjinshan Au Mine, Subei Co., Jiuquan, Gansu, China
46.7km (29.0 miles) ⓘBaishanquan Fe deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
51.1km (31.7 miles) ⓘHongling Mo Mine, Subei Co., Jiuquan, Gansu, China
60.8km (37.8 miles) ⓘMazhuangshan Au deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
62.4km (38.8 miles) ⓘTulargen area, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
64.1km (39.9 miles) ⓘBaishan Mo-Re deposit, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
70.1km (43.5 miles) ⓘJing'erquan pegmatite field, Huangshan-Jing'erquan ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
75.0km (46.6 miles) ⓘGongpoquan Cu deposit, Gongpoquan ore field, Subei Co., Jiuquan, Gansu, China
75.5km (46.9 miles) ⓘJing'erquan Cu-Ni deposit, Huangshan-Jing'erquan ore belt, Yizhou District, Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China
References
Fengjun Nie, Sihong Jiang, Peng Hu, and Yi Zhang (2004): Mineral Deposits 23(1), 11-19
Li, Ning; Zhang, Zhi-Xin; Yang, Fu-Quan; Yang, Cheng-Dong; Liu, Dong-Na; Xie, Jin-Qiang; Hu, Yi-Ting (2025) Ore genesis and fluid evolution of the Xiaobaishitou skarn W–Mo deposit in East Tianshan, NW China: Insights from the geochemistry of garnet, scheelite, and apatite. Ore Geology Reviews, 186. 106911 doi:10.1016/j.oregeorev.2025.106911
 
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