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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Halloysite from
Cerro Gordo Mine, Cerro Gordo, Cerro Gordo Mining District, Inyo Mts (Inyo Range), Inyo County, California, USA


Locality type:Mine
Classification
Species:Halloysite
Formula:Al2Si2O5(OH)4 · n(H2O)
Colour:White, banded white & brown
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Halloysite data
Locality Data:Click here to view Cerro Gordo Mine, Cerro Gordo, Cerro Gordo Mining District, Inyo Mts (Inyo Range), Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:684355
Long-form Identifier:1:3:684355:7
GUID (UUID V4):0
References
 
and/or  
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