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
Tonopah-Belmont Mine, Belmont Mountain, Tonopah, Osborn Mining District, Maricopa County, Arizona, 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 Tonopah-Belmont Mine, Belmont Mountain, Tonopah, Osborn Mining District, Maricopa County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:154136
Long-form Identifier:1:3:154136:6
GUID (UUID V4):0
Nearest other occurrences of Calcite
4.2km (2.6 miles) ⓘPotter-Cramer Mine, Vulture Mining District, Maricopa County, Arizona, USA
5.5km (3.4 miles) ⓘScott Mine, Belmont Mountain, Tonopah, Osborn Mining District, Maricopa County, Arizona, USA
5.7km (3.5 miles) ⓘBlack Vulture Mine (Black Vulture prospect), Osborn Mining District, Maricopa County, Arizona, USA
7.5km (4.7 miles) ⓘMoon Anchor Mine, Hummingbird Springs, Osborn Mining District, Maricopa County, Arizona, USA
20.7km (12.9 miles) ⓘBlack Hawk Mine (Black Hawk property), Vulture Mining District, Maricopa County, Arizona, USA
21.0km (13.0 miles) ⓘPumice Mine (Pumice group of claims), Aguila Mining District, Maricopa County, Arizona, USA
21.1km (13.1 miles) ⓘValley View Mine (Wheeler claims; Yarnell group; Prieta Chinda Mine; Manganese Development Mine), Aguila Mining District, Maricopa County, Arizona, USA
21.3km (13.2 miles) ⓘVulture Mine, Vulture, Vulture Mining District, Maricopa County, Arizona, USA
22.3km (13.9 miles) ⓘFugatt Mine (Claude Fugatt Mine; Claude Fugatt claims; Purple Pansy Mine; Purple Pansy group of claims; Fortunate Mine), Aguila Mining District, Maricopa County, Arizona, USA
23.7km (14.7 miles) ⓘBlack Bart Mine (Black Bart group of claims; Lucky Mine), Aguila Mining District, Maricopa County, Arizona, USA
References
MinRec 19(3):81-87.
 
and/or  
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