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The 'feldspathoids' are a group of tectosilicate minerals which resemble feldspars but have a different structure and much lower silica content. They occur in rare and unusual igneous rocks.

Contents

Feldspathoid Minerals

Feldspathoid Minerals

★ Leucite

★ Nepheline

★ Analcime

★ Cancrinite

★ Hauyne

★ Lazurite

★ Nosean

★ Sodalite