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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Montmorillonite from
Xiajiadian Au-(V) deposit, Shanyang County, Shangluo, Shaanxi, China


Locality type:Deposit
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Xiajiadian Au-(V) deposit, Shanyang County, Shangluo, Shaanxi, China
Data Identifiers
Mindat Occurrence Record ID:1776161
Long-form Identifier:1:3:1776161:3
GUID (UUID V4):0
References
Zhou, Tianji; Xu, Lingang; Liu, Kai; Zhang, Wang; Fu, Xuerui; Yuan, Peng (2025) Alteration mineralogy of the Xiajiadian Au deposit in southern Qinling, China: application of Short Wavelength Infra-Red (SWIR) spectroscopy for vein-type Au exploration. Ore Geology Reviews, 184. 106753 doi:10.1016/j.oregeorev.2025.106753
 
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