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
Indiana Mine, Winona, Greenland Township, Ontonagon County, Michigan, 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 Indiana Mine, Winona, Greenland Township, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:418171
Long-form Identifier:1:3:418171:2
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
28.9km (18.0 miles) ⓘCunningham Creek, Ontonagon County, Michigan, USA
36.5km (22.7 miles) ⓘChampion Mine, Champion Mine, Adams Township, Houghton County, Michigan, USA
38.4km (23.9 miles) ⓘTrimountain Mine, Trimountain, Adams Township, Houghton County, Michigan, USA
39.7km (24.6 miles) ⓘSix Mile Hill, Adams Township, Houghton County, Michigan, USA
39.9km (24.8 miles) ⓘBaltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA
41.2km (25.6 miles) ⓘBaltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA
42.5km (26.4 miles) ⓘWhite Pine Mine, White Pine, Ontonagon County, Michigan, USA
42.9km (26.7 miles) ⓘSuperior Mine (Old Superior Mine), Superior, Portage Township, Houghton County, Michigan, USA
43.5km (27.0 miles) ⓘOntonagon Silver Mine, Silver City, Ontonagon County, Michigan, USA
43.9km (27.3 miles) ⓘCleveland Mine, Ontonagon County, Michigan, USA
References
USGS PP144
 
and/or  
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