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


Locality type:Mine
Classification
Species:Bournonite
Formula:PbCuSbS3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bournonite 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
Data Identifiers
Mindat Occurrence Record ID:34831
Long-form Identifier:1:3:34831:7
GUID (UUID V4):0
Nearest other occurrences of Bournonite
36.0km (22.3 miles) ⓘLillian Mines, Printer Boy Hill, Leadville, Lake County, Colorado, USA
58.5km (36.4 miles) ⓘTerrible Mine (Silver Ore; Baltimore; Johnny Bull; Silver Cloud; Pelican vein), Silver Plume, Georgetown District, Clear Creek County, Colorado, USA
76.3km (47.4 miles) ⓘP T Shaft, Lamartine Mining District, Clear Creek County, Colorado, USA
79.3km (49.3 miles) ⓘBig Five - Belman, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
93.1km (57.9 miles) ⓘJimmy; Keystone; Contact; Eclipse; My Boys; Union Occurrence, Ruby Mining District (Elk Mountain Mining District; Irwin Mining District), Gunnison County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.pp.13-14
 
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