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Grennaite

A rock subtype
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A variety of agpaitic nepheline-syenite with phenocrysts of catapleiite and/or eudialyte in a fine-grained groundmass rich in aegirine and showing gneissose textures. The rock is most probably a deformed and partly recrystallized lujavrite.


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Unique IdentifiersHide

Mindat ID:
51869
Long-form identifier:
mindat:1:1:51869:3

Similar NamesHide

GraniteA rock classification type
GrenatA synonym of Garnet GroupX3Z2(SiO4)3
GrenatoA synonym of Garnet Supergroup
GrÞnauiteA synonym of PolydymiteNi2+Ni23+S4

Classification of GrennaiteHide

Mineralogy of GrennaiteHide

Essential minerals - these are minerals that are required within the classification of this rock:
CatapleiiteNa2Zr(Si3O9) · 2H2O
EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
Pyroxene > Clinopyroxene > AegirineNaFe3+Si2O6

Synonyms of GrennaiteHide

Internet Links for GrennaiteHide

References for GrennaiteHide

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