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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Chalcopyrite from
Estes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA


Locality type:Quarry
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Confirmed
Confirmation Methods:SEM-EDS
Associated Minerals Based on Photo Data:
Columbite-(Fe)1
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Estes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:32877
Long-form Identifier:1:3:32877:5
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
23.8km (14.8 miles) ⓘBergendahl prospect, Newfield, York County, Maine, USA
27.1km (16.8 miles) ⓘMineral Hill Mine, Wakefield, Carroll County, New Hampshire, USA
27.5km (17.1 miles) ⓘHam and Weeks Mine, Wakefield, Carroll County, New Hampshire, USA
29.4km (18.3 miles) ⓘMadison Lead Mine, Madison, Carroll County, New Hampshire, USA
29.7km (18.4 miles) ⓘHeath Quarry, Casco, Cumberland County, Maine, USA
38.2km (23.8 miles) ⓘSaunders Mica Quarry, Waterford, Oxford County, Maine, USA
38.9km (24.1 miles) ⓘLebanon-Acton mine, Acton, York County, Maine, USA
42.3km (26.3 miles) ⓘDirigo Silver mine, Acton, York County, Maine, USA
43.2km (26.9 miles) ⓘActon Mine (Acton Consolidated Mine), Acton, York County, Maine, USA
43.3km (26.9 miles) ⓘBoston-Acton mine, Acton, York County, Maine, USA
References
Rocks and Minerals (1999) 74:188,189
Thompson, Woodrow B., Bearss, Gene T., Falster, Alexander U., Simmons, William B., Nizamoff, Jams W. (2000) The Estes Quarry, Cumberland County, Maine: A New Pegmatite Mineral Locality. Rocks & Minerals, 75 (6) 408-418 doi:10.1080/00357520009605667
Korsakov, Andrey, Rezvukhina, Olga, Jaszczak, John, Rezvukhin, Dmitriy, Mikhailenko, Denis (2019) Natural Graphite Cuboids. Minerals, 9 (2) 110 doi:10.3390/min9020110
 
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