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
Silver Islet mine, Silver Islet, Sibley Township, Thunder Bay District, Ontario, Canada


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Native Silver2
Graphite1
Skutterudite1
Calcite1
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Silver Islet mine, Silver Islet, Sibley Township, Thunder Bay District, Ontario, Canada
Data Identifiers
Mindat Occurrence Record ID:21717
Long-form Identifier:1:3:21717:8
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
13.0km (8.1 miles) ⓘArsenic occurrence (Cross Property), Edward Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
14.2km (8.8 miles) ⓘBarite Occurrence, Porphyry Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
15.3km (9.5 miles) ⓘEdward Island, Porphyry Island Township, Thunder Bay District, Ontario, Canada
24.7km (15.4 miles) ⓘSilver Harbour Mine (Beck Mine; Three A Mine; 3 A), MacGregor Township, Thunder Bay District, Ontario, Canada
26.3km (16.4 miles) ⓘ7Z Mine, MacGregor Township, Thunder Bay District, Ontario, Canada
27.8km (17.3 miles) ⓘMcKellar Island (South McKellar Island), Spar and Victoria Islands Area, Thunder Bay District, Ontario, Canada
33.2km (20.6 miles) ⓘMt Baldy occurrence (David Galley occurrence), MacGregor Township, Thunder Bay District, Ontario, Canada
34.0km (21.1 miles) ⓘShuniah Mine (Duncan), McIntyre Township, Thunder Bay District, Ontario, Canada
35.0km (21.7 miles) ⓘSilver Lake occurrence, McTavish Township, Thunder Bay District, Ontario, Canada
36.5km (22.7 miles) ⓘOsmun Mine, McIntyre Township, Thunder Bay District, Ontario, Canada
References
Sessional papers (1908) - Legislature of the Province of Ontario, Volume XL Part 1
Wilson, Wendell E. (1986) Famous Mineral Localities: the Silver Islet Mine, Ontario. The Mineralogical Record, 17 (1) 49-60
 
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