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
Grundy Quarry, Winnebago County, Wisconsin, USA


Locality type:Quarry
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Grundy Quarry, Winnebago County, Wisconsin, USA
Data Identifiers
Mindat Occurrence Record ID:243201
Long-form Identifier:1:3:243201:4
GUID (UUID V4):0
Nearest other occurrences of Marcasite
5.1km (3.2 miles) ⓘSheppard Quarry, Winnebago County, Wisconsin, USA
8.7km (5.4 miles) ⓘLutz Quarry, Oshkosh, Winnebago County, Wisconsin, USA
12.9km (8.0 miles) ⓘTuler road quarries, Neenah area quarries, Winnebago County, Wisconsin, USA
13.4km (8.3 miles) ⓘSchultz Quarry, Neenah area quarries, Winnebago County, Wisconsin, USA
20.6km (12.8 miles) ⓘAllan Quarry, Winnebago County, Wisconsin, USA
31.4km (19.5 miles) ⓘMackville quarry (Land Wehr Limestone Quarry; Landwehr Materials; Inc.), Outagamie County, Wisconsin, USA
35.8km (22.3 miles) ⓘMorris pit, Green Lake, Green Lake County, Wisconsin, USA
48.2km (30.0 miles) ⓘSt. Marie quarry, Green Lake County, Wisconsin, USA
49.2km (30.6 miles) ⓘKinas Quarry, Utley, Green Lake County, Wisconsin, USA
55.8km (34.7 miles) ⓘValders Quarry, Manitowoc County, Wisconsin, USA
References
Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078
 
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