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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Quartz-trachyte from
Glynn (Glynn Hill), Larne, County Antrim, Northern Ireland, UK


Locality type:Civil Parish
Classification
Type:Quartz-trachyte
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz-trachyte data
Locality Data:Click here to view Glynn (Glynn Hill), Larne, County Antrim, Northern Ireland, UK
Data Identifiers
Mindat Occurrence Record ID:1090708
Long-form Identifier:1:3:1090708:5
GUID (UUID V4):0
References
Patterson, E.M. (1951) Proc. R. Irish Acad. 53B, 265-87.
Ryback, George, Nawaz, R., Farley, E. (1988) Seventh supplementary list of British Isles minerals (Irish) Mineralogical Magazine, 52 (365) 267-274
 
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