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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Calcite from
Arsenic occurrence (Cross Property), Edward Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada


Locality type:Occurrence
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Native Arsenic4
Quartz1
Pyrite1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Arsenic occurrence (Cross Property), Edward Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
Data Identifiers
Mindat Occurrence Record ID:155753
Long-form Identifier:1:3:155753:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.2km (0.8 miles) ⓘBarite Occurrence, Porphyry Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
13.0km (8.1 miles) ⓘSilver Islet mine, Silver Islet, Sibley Township, Thunder Bay District, Ontario, Canada
30.3km (18.8 miles) ⓘSilver Harbour Mine (Beck Mine; Three A Mine; 3 A), MacGregor Township, Thunder Bay District, Ontario, Canada
35.8km (22.3 miles) ⓘEnterprise Mine, McTavish Township, Thunder Bay District, Ontario, Canada
36.1km (22.4 miles) ⓘDetroit-Algoma Mine, McTavish Township, Thunder Bay District, Ontario, Canada
37.7km (23.4 miles) ⓘThunder Bay Amethyst Mine, McTavish Township, Thunder Bay District, Ontario, Canada
37.9km (23.5 miles) ⓘOntario Gem Mine, McTavish Township, Thunder Bay District, Ontario, Canada
38.3km (23.8 miles) ⓘDorion Amethyst Mine, Mineral Lot A, McTavish Township, Thunder Bay District, Ontario, Canada
40.1km (24.9 miles) ⓘMcNamara quarry, MacGregor Township, Thunder Bay District, Ontario, Canada
40.5km (25.2 miles) ⓘMcKellar Island (South McKellar Island), Spar and Victoria Islands Area, Thunder Bay District, Ontario, Canada
References
RWMW specimen
 
and/or  
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