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
Mine à Breton (Mine à Burton), McArthur mines, Potosi Barite Mining District, Washington County, Missouri, 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 Mine à Breton (Mine à Burton), McArthur mines, Potosi Barite Mining District, Washington County, Missouri, USA
Data Identifiers
Mindat Occurrence Record ID:209690
Long-form Identifier:1:3:209690:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.7km (1.1 miles) ⓘBugg shaft, Potosi Barite Mining District, Washington County, Missouri, USA
2.9km (1.8 miles) ⓘCentral Stone Company Potosi Quarry, Washington County, Missouri, USA
3.2km (2.0 miles) ⓘWashington County Aggregates Quarry, Washington County, Missouri, USA
5.3km (3.3 miles) ⓘMilchem Mine, Washington County, Missouri, USA
7.4km (4.6 miles) ⓘDry Bone Shaft, Washington County, Missouri, USA
9.3km (5.8 miles) ⓘOld Mines area, Washington County, Missouri, USA
9.8km (6.1 miles) ⓘShibboleth Mine, Cadet, Washington County Barite Mining District, Washington County, Missouri, USA
10.0km (6.2 miles) ⓘCadet Barite Mine, Cadet, Washington County Barite Mining District, Washington County, Missouri, USA
14.4km (8.9 miles) ⓘDresser Mine (Dresser Mine No. 6), Washington County, Missouri, USA
14.5km (9.0 miles) ⓘDresser No.4 Mine (Dresser No.4), Washington County, Missouri, USA
References
Sherwood, Mark D., Williams, Glenn A. (1998) Missouri Mineral Locality Index. Rocks & Minerals, 73 (2) 98-117 doi:10.1080/00357529809603046
 
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