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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Silver-bearing Galena from
Cucamonga Mine (Cucamonga Zinc Mine; Blew Jordam Mine), Cucamonga Peak, Lytle Creek District, San Bernardino County, California, USA


Locality type:Mine
Classification
Species:Galena var: Silver-bearing Galena
Formula:PbS with Ag
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Silver-bearing Galena data
Locality Data:Click here to view Cucamonga Mine (Cucamonga Zinc Mine; Blew Jordam Mine), Cucamonga Peak, Lytle Creek District, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:667682
Long-form Identifier:1:3:667682:7
GUID (UUID V4):0
References
Tucker, W. Burling, Reid J. Sampson (1943) Mineral resources of San Bernardino County. California Journal of Mines and Geology, 39 (4) 427-549p.480
Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology: 49(1-2): 106
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines: 53(3&4): 626
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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