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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Kröhnkite from
Leona Mine (Leona Heights Mine), Leona Heights deposit, Leona Heights, Oakland, Oakland Hills (San Leandro Hills), Alameda County, California, USA


Locality type:Mine
Classification
Species:Kröhnkite
Formula:Na2Cu(SO4)2 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Kröhnkite data
Locality Data:Click here to view Leona Mine (Leona Heights Mine), Leona Heights deposit, Leona Heights, Oakland, Oakland Hills (San Leandro Hills), Alameda County, California, USA
Data Identifiers
Mindat Occurrence Record ID:6711
Long-form Identifier:1:3:6711:9
GUID (UUID V4):0
References
Committee, FM Locality Index, Kampf, Anthony R. (1989) California Locality Index. The Mineralogical Record, 20 (2) 129-142
 
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