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
Mich mine, Oskaloosa, Mahaska County, Iowa, USA


09469180017371921179728.jpg
Calcite

Mich mine, Oskaloosa, Mahaska County, Iowa, USA
09469180017371921179728.jpg
Calcite

Mich mine, Oskaloosa, Mahaska County, Iowa, USA
03343030017272020773411.jpg
Calcite

Mich mine, Oskaloosa, Mahaska County, Iowa, USA
Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Mich mine, Oskaloosa, Mahaska County, Iowa, USA
Data Identifiers
Mindat Occurrence Record ID:210464
Long-form Identifier:1:3:210464:5
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.2km (1.4 miles) ⓘStar Coal Company strip mine, Mahaska County, Iowa, USA
10.3km (6.4 miles) ⓘSwanson mine, Knoxville, Marion County, Iowa, USA
11.1km (6.9 miles) ⓘLovilia area, Monroe County, Iowa, USA
14.8km (9.2 miles) ⓘEddyville area coal strip mines, Wapello County, Iowa, USA
18.5km (11.5 miles) ⓘPershing area, Marion County, Iowa, USA
19.3km (12.0 miles) ⓘJude coal mine, Bussey area, Marion County, Iowa, USA
21.0km (13.0 miles) ⓘCalcite locality, Pella, Marion County, Iowa, USA
37.6km (23.4 miles) ⓘLimestone quarry, Poweshiek County, Iowa, USA
54.9km (34.1 miles) ⓘKeswick quarry, Keswick, Keokuk County, Iowa, USA
55.6km (34.6 miles) ⓘKaser Quarry, Ollie, Keokuk 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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