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
Eagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA


Locality type:Mine
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Chalcopyrite23
Galenobismutite23
Tetrahedrite Subgroup21
Quartz17
Matildite16
Ankerite4
Beegerite2
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Eagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:34825
Long-form Identifier:1:3:34825:6
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
0.0km (0.0 miles) Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
1.1km (0.7 miles) Percy Chester Mine, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
20.1km (12.5 miles) Colonel Sellers Mine, Breene Mine (Aftermath; Whitequail; Badger; Milo; Delphose; Colonal Sellers; Wilfley-Kimberly), Kokomo-Tenmile area, Summit County, Colorado, USA
21.5km (13.3 miles) Victory Tunnel; Lucky Strike; Washington (Victory Mine; Victory-Lucky Strike), Kokomo-Tenmile area, Summit County, Colorado, USA
30.7km (19.1 miles) Ling Mine, Upper Blue River Mining District, Park County, Colorado, USA
34.4km (21.4 miles) Tucson Mine, Iron Hill, Lake County, Colorado, USA
34.8km (21.6 miles) Leadville Deep Mines, Empire Gulch, Lake County, Colorado, USA
35.4km (22.0 miles) Minnie Pump Shaft, Lake County, Colorado, USA
36.9km (22.9 miles) Julia Fisk Mine, Iowa Gulch, Leadville, Lake County, Colorado, USA
36.9km (22.9 miles) First National Mine, Printer Boy Hill, Leadville, Lake County, Colorado, USA
References
 
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