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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Muscovite from
Gumsberg project, Öster Silvberg mining district, Säter, Dalarna County, Sweden


Locality type:Project
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Gumsberg project, Öster Silvberg mining district, Säter, Dalarna County, Sweden
Data Identifiers
Mindat Occurrence Record ID:1652785
Long-form Identifier:1:3:1652785:4
GUID (UUID V4):0
Nearest other occurrences of Muscovite
0.7km (0.4 miles) ⓘAmerika Mine, Vallberget Mines, Öster Silvberg mining district, Säter, Dalarna County, Sweden
0.9km (0.5 miles) ⓘHedvig Mine, Vallberget Mines, Öster Silvberg mining district, Säter, Dalarna County, Sweden
1.4km (0.8 miles) ⓘSkvasselbo, Öster Silvberg mining district, Säter, Dalarna County, Sweden
5.8km (3.6 miles) ⓘKällgruvan, Öster Silvberg Mines, Öster Silvberg mining district, Säter, Dalarna County, Sweden
5.9km (3.7 miles) ⓘStor Mine, Öster Silvberg Mines, Öster Silvberg mining district, Säter, Dalarna County, Sweden
6.5km (4.0 miles) ⓘHerrgård Mine, Öster Silvberg mining district, Säter, Dalarna County, Sweden
6.7km (4.2 miles) ⓘÖster Silvberg mining district, Säter, Dalarna County, Sweden
6.7km (4.2 miles) ⓘÖster Silvberg Mines, Öster Silvberg mining district, Säter, Dalarna County, Sweden
15.3km (9.5 miles) ⓘÖsterby, St. Skedevi, Säter, Dalarna County, Sweden
18.6km (11.6 miles) ⓘStollberg orefield, Väster Silvberg, Smedjebacken, Dalarna County, Sweden
References
Makvandi, Sheida, Rost, Evelien, Witzke, Thomas, Pernechele, Matteo, Raat, Hein (2024) Enhancing Mineral Exploration Programs Through Quantitative XRD: A Case Study from the Gumsberg Polymetallic Sulphide Deposits, Sweden. Minerals, 14 (11). doi:10.3390/min14111100
 
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