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
Richards Mine (Berg Mine), Hazel Green area, Lafayette County, Wisconsin, USA


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Richards Mine (Berg Mine), Hazel Green area, Lafayette County, Wisconsin, USA
Data Identifiers
Mindat Occurrence Record ID:924331
Long-form Identifier:1:3:924331:6
GUID (UUID V4):0
Nearest other occurrences of Marcasite
0.3km (0.2 miles) ⓘBig Dad Mine, Hazel Green area, Lafayette County, Wisconsin, USA
0.7km (0.4 miles) ⓘLittle Dad Mine, Hazel Green area, Lafayette County, Wisconsin, USA
1.0km (0.6 miles) ⓘRowley Mine, Hazel Green area, Lafayette County, Wisconsin, USA
1.4km (0.9 miles) ⓘKennedy Mine (Mills; Hoskins; Gillette Drybone; Glanville), Hazel Green area, Lafayette County, Wisconsin, USA
1.6km (1.0 miles) ⓘFox Mine, Hazel Green area, Lafayette County, Wisconsin, USA
2.3km (1.4 miles) ⓘBadger Mine, Hazel Green area, Lafayette County, Wisconsin, USA
2.5km (1.5 miles) ⓘCleveland Mine, Hazel Green area, Lafayette County, Wisconsin, USA
2.6km (1.6 miles) ⓘStrawberry Blonde Mine (New Strawberry Blonde; Old Strawberry Blonde), Hazel Green area, Lafayette County, Wisconsin, USA
3.3km (2.1 miles) ⓘConsolidated Mine, Benton, Lafayette County, Wisconsin, USA
3.3km (2.1 miles) ⓘCrawford Mine, Hazel Green area, Grant County, Wisconsin, USA
References
Heyl, Allen V., Agnew, Allen F., Lyons, Erwin J., Behre, Charles H., Flint, Arthur E. (1959) The Geology of the Upper Mississippi Valley Zinc-Lead District. Professional Paper 309. US Geological Survey doi:10.3133/pp309 pp.214-215
 
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