Urtite Oka, Deux-Montagnes County, Québec, Canada 2.5 x 3 ...
Description:
Urtite Oka, Deux-Montagnes County, Québec, Canada 2.5 x 3 cm. Leucocratic variety of foidolite consisting of over 70% nepheline with some aegirine-augite but no feldspar.
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