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
Steamboat Rock area, Hardin County, Iowa, USA


Locality type:Area
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Steamboat Rock area, Hardin County, Iowa, USA
Data Identifiers
Mindat Occurrence Record ID:210369
Long-form Identifier:1:3:210369:3
GUID (UUID V4):0
Nearest other occurrences of Calcite
48.6km (30.2 miles) ⓘChapin, Franklin County, Iowa, USA
54.8km (34.0 miles) ⓘFerguson Quarry, Marshall County, Iowa, USA
59.5km (36.9 miles) ⓘWaterloo South mine, Black Hawk County, Iowa, USA
70.1km (43.6 miles) ⓘPint's Quarry, Raymond, Black Hawk County, Iowa, USA
71.6km (44.5 miles) ⓘPeske Quarry, Raymond, Black Hawk County, Iowa, USA
86.4km (53.7 miles) ⓘLittleton area, Buchanan County, Iowa, USA
87.1km (54.1 miles) ⓘGeorgia Pacific Corporation mine, Fort Dodge, Webster County, Iowa, USA
87.1km (54.1 miles) ⓘU. S. Gypsum mine, Fort Dodge, Webster County, Iowa, USA
87.4km (54.3 miles) ⓘNational Gypsum mine, Fort Dodge, Webster County, Iowa, USA
88.0km (54.7 miles) ⓘBrandon area, Buchanan County, Iowa, USA
References
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
 
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