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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Nepheline from
Tugtutôq Older Giant Dyke Complex, Tuttutooq, Kujalleq, Greenland


Locality type:Complex
Classification
Species:Nepheline
Formula:Na3K(Al4Si4O16)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Nepheline data
Locality Data:Click here to view Tugtutôq Older Giant Dyke Complex, Tuttutooq, Kujalleq, Greenland
Data Identifiers
Mindat Occurrence Record ID:157111
Long-form Identifier:1:3:157111:0
GUID (UUID V4):0
References
Upton, B. G. J., Stephenson, D., & Martin, A. R. (1985). The Tugtutôq older giant dyke complex: mineralogy and geochemistry of an alkali gabbro-augite-syenite-foyaite association in the Gardar Province of South Greenland. Mineralogical Magazine, 49(354), 623–642.
 
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