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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Mordenite from
Judd's No. 1 dike, Tormore, Isle of Arran, North Ayrshire, Scotland, UK


Locality type:Dike
Classification
Species:Mordenite
Formula:(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mordenite data
Locality Data:Click here to view Judd's No. 1 dike, Tormore, Isle of Arran, North Ayrshire, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:825962
Long-form Identifier:1:3:825962:2
GUID (UUID V4):0
References
Harris, P. G., Brindley, G. W. (1954) Mordenite as an alteration product of a pitchstone glass. American Mineralogist, 39 (9-10) 819-824
 
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