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Related to nephelinite: Olivine nephelinite


An igneous rock consisting chiefly of pyroxene and nepheline.


(Geological Science) a fine-grained basic laval rock consisting of pyroxene and nepheline


(ˈnɛf ə ləˌnaɪt)

a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.
neph`e•li•nit′ic (-ˈnɪt ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nephelinite - an igneous rock consisting of nepheline and pyroxene
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
nepheline, nephelite - a whitish mineral consisting of sodium aluminum silicate or potassium aluminum silicate in crystalline form; used in the manufacture of ceramics and enamels
pyroxene - any of a group of crystalline silicate mineral common in igneous and metamorphic rocks
References in periodicals archive ?
The Achaean Granite (i.e., the country rock) in close proximity to the intrusions has been fenitized to varying degrees, producing quartz syenite, alkali syenite, nepheline syenite, pyroxene nephelinite, microcline syenite and albite syenite.
The erosion has exposed a feeder of olivine nephelinite with remnants of pyroclastic rocks (Cajz, 1992).