feldspar
Definition from Wiktionary, the free dictionary
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[edit] English
[edit] Etymology
Feld, field (from Middle High German veld, from Old High German feld) + Spath, spar
[edit] Alternative forms
[edit] Noun
feldspar (plural feldspars)
- (mineralogy) Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.
[edit] Related terms
[edit] Derived terms
[edit] Translations
any of a large group of rock-forming minerals
