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
Municipal Quarry, Portland, Cumberland County, Maine, USA


Locality type:Quarry
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Municipal Quarry, Portland, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:99844
Long-form Identifier:1:3:99844:0
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
33.5km (20.8 miles) ⓘRussell Brothers Quarry, Topsham, Sagadahoc County, Maine, USA
40.7km (25.3 miles) ⓘConsolidated Feldspar Quarries, Georgetown, Sagadahoc County, Maine, USA
41.6km (25.8 miles) ⓘBerry-Havey Quarry, Poland, Androscoggin County, Maine, USA
43.4km (26.9 miles) ⓘMaine Feldspar Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
43.5km (27.0 miles) ⓘGreenlaw Quarry, East Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
43.6km (27.1 miles) ⓘPulsifer Quarry & Dionne extension, West Mount Apatite Mining District, Auburn, Androscoggin County, Maine, USA
45.7km (28.4 miles) ⓘEstes Quarry, West Baldwin, Baldwin, Cumberland County, Maine, USA
45.8km (28.5 miles) ⓘCoombs Quarries, Bowdoin, Sagadahoc County, Maine, USA
48.3km (30.0 miles) ⓘLaFlamme Quarry, Minot, Androscoggin County, Maine, USA
48.3km (30.0 miles) ⓘSturtevant Quarry, Minot, Androscoggin County, Maine, USA
References
Rocks & Min.: 5:46.
 
and/or  
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