| Definitions | | feldspathoid |
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noun
- (mineralogy) A small group of igneous, plutonic, and volcanic minerals formed in magma that did not contain enough silica to satisfy all the chemical bonds. Feldspathoids are silica-poor variants of the feldspar group.
- Varieties:
- leucite
- nepheline
adjective felthspathoid
- (mineralogy) Resembling a feldspar.
Etymology: Feld, field (from Middle High German veld, from Old High German feld) + Spath, spar + Oid, like or resembling.
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