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Mineralpedia Details for Magnesioriebeckite

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Magnesioriebeckite

Magnesioriebeckite

Formula
[box]Na2(Mg3Fe3+2)Si8O22(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous - Silky 
Color
light blue, dark blue, black, black blue 
Streak
blue gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
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Magnesioriebeckite from Franklin, Sussex Co., New Jersey, United States

Magnesioriebeckite
            from Franklin, Sussex Co., New Jersey, United States

Cabinet specimen with "veins" of felted, fibrous bluish Magnesioriebeckite.

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