feldspathoid

English - Turkish

Definition of feldspathoid in English Turkish dictionary

feldispatımsı

feldispatimsi

Related Terms

leucite

lösit

English - English

Definition of feldspathoid in English English dictionary

Any of 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

Resembling a feldspar

Any of a group of alkali aluminosilicate minerals similar to the feldspars in composition but having a lower silica-alkali ratio or containing chloride, sulfide, sulfate, or carbonate. Their physical and chemical properties lie between those of the feldspars and zeolites. The most abundant feldspathoids are nepheline and leucite. Other significant varieties include kalsilite, sodalite, nosean, and haüynite. Feldspathoids are found chiefly in igneous and metamorphic rocks; they are used as raw materials in the production of alum, glass, and ceramics

leucite

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

nepheline

Hyphenation

feld·spath·oid

Etymology

() Feld, field (from Middle High German veld, from Old High German feld) + Spath, spar + Oid, like or resembling.