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
Elkhorn Prospect (Tin Horn Occurrence), Left Hand Creek Mining District, Boulder County, Colorado, USA


Locality type:Prospect
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 Elkhorn Prospect (Tin Horn Occurrence), Left Hand Creek Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:489885
Long-form Identifier:1:3:489885:6
GUID (UUID V4):0
Nearest other occurrences of Muscovite
0.6km (0.4 miles) ⓘBeryl Lode (Lehman mine), Left Hand Creek Mining District, Boulder County, Colorado, USA
1.6km (1.0 miles) ⓘUnknown Mica (MRDS - 10108334), Boulder County, Colorado, USA
3.4km (2.1 miles) ⓘNew Girl Prospect, Left Hand Creek Mining District, Boulder County, Colorado, USA
4.9km (3.0 miles) ⓘHill Gulch, Jamestown Mining District, Boulder County, Colorado, USA
5.1km (3.2 miles) ⓘRusty Gold Mine (Copper Blush occurrence), Jamestown Mining District, Boulder County, Colorado, USA
5.5km (3.4 miles) ⓘBlue Jay Mine, Jamestown, Jamestown Mining District, Boulder County, Colorado, USA
5.5km (3.4 miles) ⓘBeryl No. 1 claim, Gold Hill Mining District, Boulder County, Colorado, USA
5.7km (3.5 miles) ⓘNugget Group, Jamestown Mining District, Boulder County, Colorado, USA
6.2km (3.8 miles) ⓘInterocean Mine, Gold Hill Mining District, Boulder County, Colorado, USA
6.6km (4.1 miles) ⓘBueno (Buena Group), Jamestown Mining District, Boulder County, Colorado, USA
References
Hanley, J.B., Heinrich, E.W., Page, L.R. (1950) Pegmatite investigations in Colorado, Wyoming, and Utah, 1942-1944. Professional Paper 227. US Geological Survey doi:10.3133/pp227
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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