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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Wairakite from
Portage Lake Volcanics, Keweenaw County, Michigan, USA


Classification
Species:Wairakite
Formula:Ca(Al2Si4O12) · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Wairakite data
Locality Data:Click here to view Portage Lake Volcanics, Keweenaw County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:418015
Long-form Identifier:1:3:418015:9
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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