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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Mendozite from
Mount Adams summit, Mount Adams, Yakima County, Washington, USA


Locality type:Mountain
Classification
Species:Mendozite
Formula:NaAl(SO4)2 · 11H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mendozite data
Locality Data:Click here to view Mount Adams summit, Mount Adams, Yakima County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:106824
Long-form Identifier:1:3:106824:5
GUID (UUID V4):0
References
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.p.120
 
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