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
Nancy Wood mine (Sugar Loaf; Forest; Pittsburg; Gray Copper), 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 Nancy Wood mine (Sugar Loaf; Forest; Pittsburg; Gray Copper), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:271995
Long-form Identifier:1:3:271995:5
GUID (UUID V4):0
Nearest other occurrences of Pyrite
0.2km (0.1 miles) ⓘGray Copper, Gold Hill Mining District, Boulder County, Colorado, USA
0.4km (0.2 miles) ⓘEmerson, Gold Hill Mining District, Boulder County, Colorado, USA
0.6km (0.4 miles) ⓘWood Mountain Group, Gold Hill Mining District, Boulder County, Colorado, USA
1.3km (0.8 miles) ⓘLogan & Sunbeam Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA
1.3km (0.8 miles) ⓘGrand Republic Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA
1.9km (1.2 miles) ⓘIngram mine (Valley Forge Occurrence; Critic and Railroad Boy; Sunshine; Three Brothers; Atchison; Belle; Golden Eagle; Melvina; Baron; Richmond), Gold Hill Mining District, Boulder County, Colorado, USA
1.9km (1.2 miles) ⓘMelvina, Gold Hill Mining District, Boulder County, Colorado, USA
2.3km (1.4 miles) ⓘCopper King Mine (Yeager's Mine), Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
2.5km (1.5 miles) ⓘCash Mine, Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
2.5km (1.6 miles) ⓘYellow Pine, Sugarloaf Mining District, Boulder 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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