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
Long and Derry Mine, Iowa Gulch, Long and Derry Hill, Lake 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 Long and Derry Mine, Iowa Gulch, Long and Derry Hill, Lake County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:224287
Long-form Identifier:1:3:224287:3
GUID (UUID V4):0
Nearest other occurrences of Pyrite
1.0km (0.6 miles) ⓘFirst National Mine, Printer Boy Hill, Leadville, Lake County, Colorado, USA
1.1km (0.7 miles) ⓘJulia Fisk Mine, Iowa Gulch, Leadville, Lake County, Colorado, USA
1.6km (1.0 miles) ⓘBlack Cloud Mine (Resurrection Mine 0080650339; Yak Tunnel; Leadville Unit; Irene Shaft), Iowa Gulch, Leadville, Lake County, Colorado, USA
1.7km (1.1 miles) ⓘUpper Printer Boy Mine, Printer Boy Hill, Leadville, Lake County, Colorado, USA
1.9km (1.2 miles) ⓘLower Printer Boy Mine, Printer Boy Hill, Leadville, Lake County, Colorado, USA
2.5km (1.5 miles) ⓘStevens Mine, Lake County, Colorado, USA
2.5km (1.5 miles) ⓘVenier Mine, Lake County, Colorado, USA
2.5km (1.6 miles) ⓘCrown Point Mine No. 3, Rock Hill, Leadville, Lake County, Colorado, USA
2.6km (1.6 miles) ⓘIrene Mine, Leadville, Lake County, Colorado, USA
2.6km (1.6 miles) ⓘCrown Point Mine, Rock Hill, Leadville, Lake County, Colorado, USA
References
Emmons, Samuel Franklin (1886) Geology and mining industry of Leadville, Colorado, with atlas. Monograph 12. US Geological Survey doi:10.3133/m12
 
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