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


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Wurtzite8
Data
Mineral Data:Click here to view Marcasite 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:21728
Long-form Identifier:1:3:21728:4
GUID (UUID V4):0
Nearest other occurrences of Marcasite
24.7km (15.4 miles) ⓘSilver Harbour Mine (Beck Mine; Three A Mine; 3 A), MacGregor Township, Thunder Bay District, Ontario, Canada
38.7km (24.1 miles) ⓘEmmons mine, McIntyre Township, Thunder Bay District, Ontario, Canada
41.6km (25.8 miles) ⓘThunder Bay Amethyst Mine, McTavish Township, Thunder Bay District, Ontario, Canada
50.0km (31.1 miles) ⓘParsons Mine (Lily of the Valley Mine), Paipoonge Township, Thunder Bay District, Ontario, Canada
52.9km (32.9 miles) ⓘFederal Mine (Copeland's vein), Paipoonge Township, Thunder Bay District, Ontario, Canada
64.9km (40.3 miles) ⓘCrystal Lake Intrusion, Pardee Township, Thunder Bay District, Ontario, Canada
66.0km (41.0 miles) ⓘGreat Lakes Nickel prospect, Pardee Township, Thunder Bay District, Ontario, Canada
References
Wilson, Wendell E. (1986) Famous Mineral Localities: the Silver Islet Mine, Ontario. The Mineralogical Record, 17 (1) 49-60
 
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