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
Grundy Quarry, Winnebago County, Wisconsin, USA


Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Grundy Quarry, Winnebago County, Wisconsin, USA
Data Identifiers
Mindat Occurrence Record ID:243199
Long-form Identifier:1:3:243199:4
GUID (UUID V4):0
Nearest other occurrences of Calcite
5.1km (3.2 miles) ⓘSheppard Quarry, Winnebago County, Wisconsin, USA
8.6km (5.3 miles) ⓘVulcan Quarry (Oshkosh Operations; Oshkosh Quarry; Vulcan Materials Company; Midwest Div.), 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
14.6km (9.1 miles) ⓘ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
32.0km (19.9 miles) ⓘNew London Quarry (Black Creek Limestone Company), Outagamie County, Wisconsin, USA
34.1km (21.2 miles) ⓘNellis Limestone Quarry (Ripon Quarry; Green Lake Ready Mix Company), Fond Du Lac 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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