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
Jackass Mine, 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 Jackass Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:327007
Long-form Identifier:1:3:327007:3
GUID (UUID V4):0
Nearest other occurrences of Calcite
0.3km (0.2 miles) ⓘLane Mine (Sorba 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
0.4km (0.2 miles) ⓘWonder Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA
0.6km (0.4 miles) ⓘSanta Ana Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
0.9km (0.6 miles) ⓘBruce Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.0km (0.6 miles) ⓘStandard Mine, Ruona group, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.1km (0.7 miles) ⓘLucky Lucy Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.1km (0.7 miles) ⓘCuster Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.2km (0.7 miles) ⓘSt. Charles Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.3km (0.8 miles) ⓘRichardson prospect (Richardson group; Reno), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
1.7km (1.0 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
References
Foord, E. E.; Shawe, D. R. (1989) The Pb-Bi-Ag-Cu-(Hg) Chemistry Of Galena And Some Associated Sulfosalts: A Reviewand Some New Data From Colorado, California And Pennsylvania. The Canadian Mineralogist, 27 (3). 363-382
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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