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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Granitoid from
Easter-Duffy mineral occurrence, Easter Island Dike, Great Slave Lake, Northwest Territories, Canada


Locality type:Occurrence
Classification
Type:Granitoid
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Granitoid data
Locality Data:Click here to view Easter-Duffy mineral occurrence, Easter Island Dike, Great Slave Lake, Northwest Territories, Canada
Data Identifiers
Mindat Occurrence Record ID:1982148
Long-form Identifier:1:3:1982148:7
GUID (UUID V4):0
Nearest other occurrences of Granitoid
60.3km (37.5 miles) ⓘMoose II pegmatite (ELK; Beck; DeStaffany), Yellowknife Pegmatite field, Northwest Territories, Canada
References
Graham, Cole; Locock, Andrew; Falck, Hendrik; Reynolds, Merilie; Canam, Rebecca; He, Qing; Rodríguez, Juan; Lecumberri-Sanchez, Pilar (2026) Mineralogy and geochemical controls on the Easter-Duffy five-element vein system, NWT, Canada. Ore Geology Reviews, 196. p.107451. doi:10.1016/j.oregeorev.2026.107451
 
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