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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Arsenopyrite from
Victory Tunnel; Lucky Strike; Washington (Victory Mine; Victory-Lucky Strike), Kokomo-Tenmile area, Summit County, Colorado, USA


Locality type:Tunnel
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Victory Tunnel; Lucky Strike; Washington (Victory Mine; Victory-Lucky Strike), Kokomo-Tenmile area, Summit County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:431128
Long-form Identifier:1:3:431128:7
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
1.5km (0.9 miles) ⓘColonel Sellers Mine, Breene Mine (Aftermath; Whitequail; Badger; Milo; Delphose; Colonal Sellers; Wilfley-Kimberly), Kokomo-Tenmile area, Summit County, Colorado, USA
9.2km (5.7 miles) ⓘLing Mine, Upper Blue River Mining District, Park County, Colorado, USA
20.4km (12.7 miles) ⓘTucson Mine, Iron Hill, Lake County, Colorado, USA
20.9km (13.0 miles) ⓘPercy Chester Mine, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
21.2km (13.2 miles) ⓘMinnie Pump Shaft, Lake County, Colorado, USA
21.2km (13.2 miles) ⓘLeadville Deep Mines, Empire Gulch, Lake County, Colorado, USA
21.5km (13.3 miles) ⓘGilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
21.5km (13.3 miles) ⓘEagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
21.6km (13.4 miles) ⓘJulia Fisk Mine, Iowa Gulch, Leadville, Lake County, Colorado, USA
21.7km (13.5 miles) ⓘFirst National Mine, Printer Boy Hill, Leadville, Lake 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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