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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Pyrite from
Copper King Mine (Yeager's Mine), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Copper King Mine (Yeager's Mine), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:149792
Long-form Identifier:1:3:149792:2
GUID (UUID V4):0
Nearest other occurrences of Pyrite
1.7km (1.1 miles) ⓘCash Mine, Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
1.9km (1.2 miles) ⓘEmerson, Gold Hill Mining District, Boulder County, Colorado, USA
2.1km (1.3 miles) ⓘFairday Mine, Central Mining District, Boulder County, Colorado, USA
2.1km (1.3 miles) ⓘCorning Tunnel (Cold Spring; Alamakee; St. Joe; Blackhawk; Cash Occurrence), Gold Hill Mining District, Boulder County, Colorado, USA
2.1km (1.3 miles) ⓘSlide Mine, Gold Hill Mining District, Boulder County, Colorado, USA
2.1km (1.3 miles) ⓘCold Springs Group (Times Tunnel; Hoodoo; Horsefal; Haddock; Crown; King; Wolf Tongue; Red Cloud), Gold Hill Mining District, Boulder County, Colorado, USA
2.1km (1.3 miles) ⓘGray Copper, Gold Hill Mining District, Boulder County, Colorado, USA
2.3km (1.4 miles) ⓘNancy Wood mine (Sugar Loaf; Forest; Pittsburg; Gray Copper), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
2.6km (1.6 miles) ⓘOrphan Boy Occurrence, Sunset, Boulder County, Colorado, USA
2.7km (1.7 miles) ⓘBlack Cloud, Gold Hill Mining District, Boulder County, Colorado, USA
References
Rocks & Min.: 22:205.
American Mineralogist 28:257-271
Lovering, T.S., Goddard, E.N. (1950) Geology and ore deposits of the Front Range, Colorado. Professional Paper 223. US Geological Survey doi:10.3133/pp223
 
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