N minerals

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Narsarsukite

from various origins.

A rare mineral from alcaline rocks.

Chemistry : Na2(Ti,Fe)Si4(O,F)11
System : Tetragonal

Natrolite

from various origins.

A zeolite group mineral.

Chemistry : Na2Al2Si3O10 2H2O
System : Orthorhombic

Neptunite

Rare mineral from syenite or from californian natrolite veins.

Chemistry : K Na2 Li (Fe++,Mg,Mn)2 Ti2 Si8O24
System : Monoclinic

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