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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Feldspar Group from
Brereton Mine, Coal Creek, Ralston Buttes Mining District, Jefferson County, Colorado, USA


Locality type:Mine
Classification
Species:'Feldspar Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Feldspar Group data
Locality Data:Click here to view Brereton Mine, Coal Creek, Ralston Buttes Mining District, Jefferson County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:493095
Long-form Identifier:1:3:493095:2
GUID (UUID V4):0
Nearest other occurrences of Feldspar Group
12.6km (7.8 miles) ⓘMountain Lion Mine - Keystone vein, Magnolia Mining District, Boulder County, Colorado, USA
14.3km (8.9 miles) ⓘSilver Dollar Mine, Eureka Mining District, Gilpin County, Colorado, USA
14.5km (9.0 miles) ⓘEureka Mine (Eureka Alta), Boulder County Tungsten Mining District, Boulder County, Colorado, USA
17.1km (10.6 miles) ⓘEgyptian, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
18.7km (11.6 miles) ⓘWyandotte, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
19.5km (12.1 miles) ⓘHudson Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
20.2km (12.6 miles) ⓘFairmount (Shafter), Lawson Mining District, Clear Creek County, Colorado, USA
21.2km (13.2 miles) ⓘBrooklyn Shaft, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
23.1km (14.4 miles) ⓘAlbro Group, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
24.0km (14.9 miles) ⓘAlexander, Upper Union Mining District, Clear Creek County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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