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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Chalcocite from
Horse Mountain Uranium Mines, Brush Creek Mining District, Eagle County, Colorado, USA


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Horse Mountain Uranium Mines, Brush Creek Mining District, Eagle County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:433239
Long-form Identifier:1:3:433239:8
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
31.7km (19.7 miles) ⓘEagle Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
32.6km (20.3 miles) ⓘChampion Mine, Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado, USA
37.0km (23.0 miles) ⓘRio Grande & Copper Queen Occurrence, McCoy Mining District, Eagle County, Colorado, USA
44.4km (27.6 miles) ⓘMollie Gibson Mine, Aspen, Aspen Mining District (Roaring Fork Mining District), Pitkin County, Colorado, USA
45.1km (28.0 miles) ⓘSnowmass Creek Mine, Snowmass Creek Area, Pitkin County, Colorado, USA
53.7km (33.3 miles) ⓘCarbonate Mining District, Garfield County, Colorado, USA
55.3km (34.3 miles) ⓘClimax Mine, Climax, Climax Mining District, Lake County, Colorado, USA
57.3km (35.6 miles) ⓘTucson Mine, Iron Hill, Lake County, Colorado, USA
58.0km (36.0 miles) ⓘPenn No. 3 Mine, Lake County, Colorado, USA
58.9km (36.6 miles) ⓘBreece 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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