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Sodalite in nepheline syenite

#50691

Sodalite in nepheline syenite

#50691
Availability
Sold
Size
11 x 6 x 2.5 cm - Cabinet 
Formula
Na4Si3Al3O12Cl (RRUFF)
Locality
Magnet Cove, Hot Spring Co., Arkansas, United States

Blue Sodalite on the side and elsewhere, but fainter, in other areas. The Sodalite is a component of this petrologic specimen of nepheline syenite, a excellent example from this important and historic locality.

Sodalite

Formula
Na4Si3Al3O12Cl 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Disseminated 
Cleavage
Poor, None, None 
Luster
Vitreous - Greasy 
Color
azure blue, white, pink, gray, green 
Streak
white 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Conchoidal 
Hardness

Data courtesy of Webmineral.

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