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
Silver Harbour Mine (Beck Mine; Three A Mine; 3 A), MacGregor Township, Thunder Bay District, Ontario, Canada


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Silver Harbour Mine (Beck Mine; Three A Mine; 3 A), MacGregor Township, Thunder Bay District, Ontario, Canada
Data Identifiers
Mindat Occurrence Record ID:655469
Long-form Identifier:1:3:655469:9
GUID (UUID V4):0
Nearest other occurrences of Calcite
13.0km (8.1 miles) ⓘMcNamara quarry, MacGregor Township, Thunder Bay District, Ontario, Canada
13.5km (8.4 miles) ⓘThunder Bay Mine, MacGregor Township, Thunder Bay District, Ontario, Canada
17.4km (10.8 miles) ⓘShuniah Mine (Duncan), McIntyre Township, Thunder Bay District, Ontario, Canada
20.8km (12.9 miles) ⓘOsmun Mine, McIntyre Township, Thunder Bay District, Ontario, Canada
23.3km (14.5 miles) ⓘEmmons mine, McIntyre Township, Thunder Bay District, Ontario, Canada
24.7km (15.4 miles) ⓘSilver Islet mine, Silver Islet, Sibley Township, Thunder Bay District, Ontario, Canada
26.8km (16.7 miles) ⓘEscape intrusion, Thunder Bay District, Ontario, Canada
27.0km (16.8 miles) ⓘThunder Bay Amethyst Mine, McTavish Township, Thunder Bay District, Ontario, Canada
29.1km (18.1 miles) ⓘDetroit-Algoma Mine, McTavish Township, Thunder Bay District, Ontario, Canada
30.3km (18.8 miles) ⓘArsenic occurrence (Cross Property), Edward Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
References
Vos, M. A., 1976, Amethyst Deposits of Ontario, Ontario Division of Mines, pp. 99..
Sessional papers (1908) - Legislature of the Province of Ontario, Volume XL Part 1
 
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