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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Rubicline from
High Grade Dyke pegmatite (High-Grade Dike pegmatite), Donner Lake, Cat Lake - Winnipeg River pegmatite field, Lac-du-Bonnet area, Manitoba, Canada


Locality type:Pegmatite
Classification
Species:Rubicline
Formula:Rb(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Rubicline data
Locality Data:Click here to view High Grade Dyke pegmatite (High-Grade Dike pegmatite), Donner Lake, Cat Lake - Winnipeg River pegmatite field, Lac-du-Bonnet area, Manitoba, Canada
Data Identifiers
Mindat Occurrence Record ID:978901
Long-form Identifier:1:3:978901:2
GUID (UUID V4):0
References
Teertstra, D. K.; Černý, P. & Hawthorn, F.C. (1998) Rubidium feldspars in granitic pegmatites. Canadian Mineralogist 36, 483-496.
 
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