nephelinite
IPA: nˈɛfˈɛɫɪnaɪt
noun
- (geology) A darkish, finely crystalline rock of volcanic origin, being a mixture of nepheline and pyroxene
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Examples of "nephelinite" in Sentences
- Nephelinite is an example of a silica undersaturated igneous rock.
- Nephelinite is dark in color and may resemble basalt in hand specimen.
- If olivine is present, the rock may be classified as an olivine nephelinite.
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