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
Boston-Acton mine, Acton, York County, Maine, USA


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Boston-Acton mine, Acton, York County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:31328
Long-form Identifier:1:3:31328:7
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
0.1km (0.1 miles) ⓘActon Mine (Acton Consolidated Mine), Acton, York County, Maine, USA
1.2km (0.8 miles) ⓘDirigo Silver mine, Acton, York County, Maine, USA
4.5km (2.8 miles) ⓘLebanon-Acton mine, Acton, York County, Maine, USA
19.6km (12.2 miles) ⓘBergendahl prospect, Newfield, York County, Maine, USA
22.8km (14.1 miles) ⓘHam and Weeks Mine, Wakefield, Carroll County, New Hampshire, USA
23.2km (14.4 miles) ⓘMineral Hill Mine, Wakefield, Carroll County, New Hampshire, USA
41.4km (25.7 miles) ⓘSilverdale Mine, Pittsfield, Merrimack County, New Hampshire, USA
43.1km (26.8 miles) ⓘAdams Point borehole (AP1), Durham, Strafford County, New Hampshire, USA
43.3km (26.9 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
44.3km (27.5 miles) ⓘNational Refuge borehole (NR1), Great Bay National Wildlife Refuge, Newington, Rockingham County, New Hampshire, USA
References
King, Vandall T., Foord, Eugene E. (1994) Mineralogy of Maine Vol. 1 - Descriptive mineralogy. Maine Geological Survey.
Thompson, Woodrow B., Joyner, Ronald L., Woodman, Raymond G., King, Vandall T. (1998) Bulletin (41), A Collector's Guide to Maine Mineral Localities (3rd ed.) Maine Geological Survey
 
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