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Mineralpedia Details for Natrolemoynite

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Natrolemoynite

Natrolemoynite

Named in reference to the dominance of sodium (Na) in the composition and for the relationship to lemoynite. Found only at the type locality at the Poudrette quarry at Mont Saint-Hilaire in Quebec, Canada where is occurs with microcline, lemoynite, and sulfides in altered pegmatites that cut nepheline syenite, as well as in unaltered pegmatites. Appears as colorless to white to pink, bladed to prismatic crystals.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

IMA/CNMNC List of Mineral Names (2009) and Candian Mineralogist 39 (2001), 1295

Formula
Na4Zr2Si10O26ยท9H2
Crystal System
Monoclinic 
Crystal Habit
Radial, Aggregates, Bladed 
Cleavage
Perfect, Perfect, Poor 
Luster
Vitreous (Glassy) 
Color
colorless, white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
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