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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Offretite from
Blakeburn, Coalmont, Similkameen Mining Division, British Columbia, Canada


Classification
Species:Offretite
Formula:KCaMg(Si13Al5)O36 · 15H2O
Habit:thin overgrowths of erionite/offretite on Levyne
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Offretite data
Locality Data:Click here to view Blakeburn, Coalmont, Similkameen Mining Division, British Columbia, Canada
Data Identifiers
Mindat Occurrence Record ID:423596
Long-form Identifier:1:3:423596:5
GUID (UUID V4):0
References
Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.
 
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