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
Georgetown-Silver Plume Mining District (Griffith Mining District; Silver Plume Mining District), Clear Creek County, Colorado, USA


Locality type:Mining District
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Georgetown-Silver Plume Mining District (Griffith Mining District; Silver Plume Mining District), Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:358229
Long-form Identifier:1:3:358229:9
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
0.8km (0.5 miles) ⓘSnowdrift, Georgetown District, Clear Creek County, Colorado, USA
1.1km (0.7 miles) ⓘPayrock Mine, Illinois Mine, Georgetown District, Clear Creek County, Colorado, USA
1.8km (1.1 miles) ⓘBismark Pelican (Pelican - Dives Mine), Georgetown District, Clear Creek County, Colorado, USA
9.7km (6.0 miles) ⓘMurry Mine, Lawson Mining District, Clear Creek County, Colorado, USA
10.7km (6.7 miles) ⓘBelle Creole, Freeland, Freeland-Lamartine Mining District, Clear Creek County, Colorado, USA
11.2km (7.0 miles) ⓘBig Chief Shaft, Lamartine Mining District, Clear Creek County, Colorado, USA
12.8km (8.0 miles) ⓘOld Settler Mine & Tunnel, Lawson Mining District, Clear Creek County, Colorado, USA
13.7km (8.5 miles) ⓘAlice Glory Hole, Alice Mine, Alice Mining District (Yankee Mining District; Lincoln Mining District), Clear Creek County, Colorado, USA
13.8km (8.5 miles) ⓘAlice Mine, Alice Mining District (Yankee Mining District; Lincoln Mining District), Clear Creek County, Colorado, USA
14.7km (9.1 miles) ⓘEngland, Lawson Mining District, Clear Creek County, Colorado, USA
References
USGS PP 223(Lovering,1950)
 
and/or  
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