Meaning of feldspathoid in English:


Pronunciation /ˈfɛl(d)spəθɔɪd/


  • Any of a group of minerals chemically similar to feldspar but containing less silica, such as nepheline and leucite.

    ‘The three commonest feldspathoids are leucite, nepheline, and sodalite.’
    • ‘Afghanite occurs as small, typically colorless transparent crystals associated with a wide variety of feldspathoids in volcanic ejecta collected in the general Mount Vesuvius area, Italy.’
    • ‘The change from incompatible to compatible behavior heralds the onset of significant plagioclase (or feldspathoid) precipitation/removal.’