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
Keokuk, Lee County, Iowa, USA


Locality type:City
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Keokuk, Lee County, Iowa, USA
Data Identifiers
Mindat Occurrence Record ID:102452
Long-form Identifier:1:3:102452:4
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
2.7km (1.7 miles) ⓘGray Quarry, Hamilton, Hancock County, Illinois, USA
5.5km (3.4 miles) ⓘGeode Glen Park, Warsaw, Hancock County, Illinois, USA
17.0km (10.6 miles) ⓘSt. Francisville, Clark County, Missouri, USA
34.0km (21.1 miles) ⓘCessford Quarry, Dallas City, Hancock County, Illinois, USA
39.0km (24.2 miles) ⓘLa Grange road cut, Lewis County, Missouri, USA
40.9km (25.4 miles) ⓘO'Neal Quarry, Plymouth, Hancock County, Illinois, USA
50.1km (31.1 miles) ⓘDurham, Lewis County, Missouri, USA
52.4km (32.5 miles) ⓘEvans coal mine, Lewis County, Missouri, USA
53.0km (32.9 miles) ⓘBear Creek, Vernon area, Van Buren County, Iowa, USA
57.8km (35.9 miles) ⓘCoppers Creek, Vernon area, Van Buren County, Iowa, USA
References
Zeitner (1956), Midwest Gem Trails
 
and/or  
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