nephelinite
/nef-uh-luh-nahyt/US // ˈnɛf ə ləˌnaɪt //UK // (ˈnɛfɪlɪˌnaɪt) //
霞石,辉绿岩,霞光岩,霞光石
Definitions
n.名词 noun
- 1
Petrography.
- : a fine-grained, dark rock of volcanic origin, essentially a basalt containing nepheline but no feldspar and little or no olivine.
Examples
They are chiefly leucite and nepheline rocks, such as leucitite, leucitophyre and nephelinite, but basalt and trachyte also occur.
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