How To Use nephelinite In A Sentence
- The composition studied has very low albite and is classified as transitional between olivine nephelinite and nepheline-rich basanite.
- Magma modelling showed that olivine nephelinite and basanite could form by different degrees of partial melting of the mantle source, with amphibole, garnet, olivine and clinopyroxene in the residuum.
- The lava flows within the pyroclasts are composed of nephelinite and phonolite.
- The nephelinites are conformably overlain by picrites and picritic basalts of the Letaba Formation, although in the southern Lebombo the picrites directly overlie the Clarens Formation.
- Geochemically, the pyroxene nephelinite is highly enriched in LILE compared with the first one.
- Another New Zealand locality for this type of nephelinite is in the Auckland Domain.