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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Arsenopyrite from
Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA


Locality type:Mine
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Parker Mountain Mine, Strafford, Strafford County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:50822
Long-form Identifier:1:3:50822:9
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
18.2km (11.3 miles) ⓘBrush Hill, Epsom, Merrimack County, New Hampshire, USA
28.8km (17.9 miles) ⓘBoston-Acton mine, Acton, York County, Maine, USA
28.9km (18.0 miles) ⓘActon Mine (Acton Consolidated Mine), Acton, York County, Maine, USA
29.3km (18.2 miles) ⓘDirigo Silver mine, Acton, York County, Maine, USA
32.5km (20.2 miles) ⓘAdams Point borehole (AP1), Durham, Strafford County, New Hampshire, USA
32.7km (20.3 miles) ⓘLebanon-Acton mine, Acton, York County, Maine, USA
33.2km (20.6 miles) ⓘTilton Sand & Gravel Quarry, Belmont, Belknap County, New Hampshire, USA
34.7km (21.6 miles) ⓘHooksett Crushed Stone Quarry, Hooksett, Merrimack County, New Hampshire, USA
35.2km (21.9 miles) ⓘNational Refuge borehole (NR1), Great Bay National Wildlife Refuge, Newington, Rockingham County, New Hampshire, USA
42.7km (26.5 miles) ⓘBond Mountain prospect, Newfield, York County, Maine, USA
References
Rocks & Minerals 80:4 pp234-241
 
and/or  
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