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
Big Horn Mine [2] (Bighorn Mine; Lapis Lazuli deposit), Stoddard Peak, San Bernardino 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 Big Horn Mine [2] (Bighorn Mine; Lapis Lazuli deposit), Stoddard Peak, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:632888
Long-form Identifier:1:3:632888:7
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.5km (1.0 miles) ⓘCascade Canyon, San Bernardino County, California, USA
15.7km (9.8 miles) ⓘHeath Canyon flood control channel, Wrightwood, San Bernardino County, California, USA
24.2km (15.0 miles) ⓘFelix Mine, Azusa (Dalton), Los Angeles County, California, USA
25.5km (15.9 miles) ⓘGlen Avon Quarry (Glen Avon Limestone deposit; Mathews), Glen Avon, Riverside County, California, USA
28.0km (17.4 miles) ⓘHenshaw Quarry, Bloomington, San Bernardino County, California, USA
28.5km (17.7 miles) ⓘJensen Quarry, Jurupa Mountains, Jurupa Valley, Riverside County, California, USA
31.8km (19.8 miles) ⓘCrestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
31.8km (19.8 miles) ⓘCommercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
32.4km (20.1 miles) ⓘWet Weather Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
32.9km (20.4 miles) ⓘSlover Mountain Quarry (California Portland Cement Company Quarry; Colton Marble), West Colton, San Bernardino County, California, USA
References
Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - Eds. (2016) Handbook of Mineralogy. https://www.handbookofmineralogy.org/
 
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