Back Nefelinli siyenit AZ Nephelinsyenit German Sienita nefelínica Spanish نفلین سینیت FA Նեֆելինային սիենիտ HY 霞石閃長岩 Japanese Нефелинді сиенит KK Nefelinsyenitt NN Nefelinsyenitt NB Syenit nefelinowy Polish
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (February 2014) |
| Igneous rock | |
 Hand samples of nepheline syenite of the Ordovician Beemerville Complex, northern New Jersey | |
| Composition | |
|---|---|
| Primary | alkali feldspar, nepheline, clinopyroxene, amphibole, biotite |
| Secondary | magnetite, ilmenite, apatite, titanite |
Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar.[1] The rocks are mostly pale colored, grey or pink, and in general appearance they are not unlike granites, but dark green varieties are also known. Phonolite is the fine-grained extrusive equivalent.
- ^ Kresten, Peter; Troll, Valentin R. (2018). "The Alnö Carbonatite Complex, Central Sweden". GeoGuide. doi:10.1007/978-3-319-90224-1. ISBN 978-3-319-90223-4. ISSN 2364-6497. S2CID 135266142.