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
Ruona Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, 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 Ruona Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:797463
Long-form Identifier:1:3:797463:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.1km (0.7 miles) ⓘChristmas Gift Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.5km (0.9 miles) ⓘThompson Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.5km (1.0 miles) ⓘDarwin Mines (Darwin group; Defiance; Driver; Independence; Lane; Liberty; Lucky Jim; Southwest and Thompson; Bernon; Rip Van Winkle; Mexicanus Colorado Inc.), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.6km (1.0 miles) ⓘStandard Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.7km (1.1 miles) ⓘLucky Jim Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.7km (1.1 miles) ⓘDefiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.9km (1.2 miles) ⓘFairbanks Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.9km (1.2 miles) ⓘBruce Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
2.2km (1.4 miles) ⓘWonder Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA
2.4km (1.5 miles) ⓘSanta Ana Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
References
Tucker, W. Burling, Reid J. Sampson (1938) Mineral resources of Inyo County, California. California Journal of Mines and Geology, 34 (4) 368-500
 
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