Overview

melteigite


'melteigite' can also refer to...

 

More Like This

Show all results sharing this subject:

  • Earth Sciences and Geography

GO

Show Summary Details

Quick Reference

An undersaturated, intrusive igneous rock containing essential nepheline and alkali pyroxene (aegirine or aegerine-augite) and displaying a colour index of 70–90. With decreasing mafic mineral content and increasing nepheline content melteigites pass into ijolites and then into urtites. All three rock types are essentially feldspar-free, undersaturated syenites (see silica saturation) and are well displayed in the Fen intrusive complex of southern Norway.

Subjects: Earth Sciences and Geography.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.