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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Crednerite from
Algomah Mine, Mass City, Ontonagon County, Michigan, USA


Locality type:Mine
Classification
Species:Crednerite
Formula:Cu+Mn3+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Crednerite data
Locality Data:Click here to view Algomah Mine, Mass City, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:414688
Long-form Identifier:1:3:414688:9
GUID (UUID V4):0
References
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
 
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