Feldspar — is the name of a group of rock forming minerals which make up as much as 60% of the Earth s crust.Feldspar. [http://www.ima na.org/about industrial minerals/feldspar.asp What is Feldspar?] Industrial Minerals Association. Retrieved on July 18… … Wikipedia
Feldspar — Feld spar , Feldspath Feld spath , n. [G. feldspath; feld field + spath spar.] (Min.) A name given to a group of minerals, closely related in crystalline form, and all silicates of alumina with either potash, soda, lime, or, in one case, baryta.… … The Collaborative International Dictionary of English
feldspar — 1785, earlier feldspath (1757), from Ger. Feldspath (Mod.Ger. Feldspat), from Feld field (see FIELD (Cf. field) (n.)) + spath spar, non metallic mineral, gypsum (see SPAR (Cf. spar) (n.2)); spelling influenced by English spar … Etymology dictionary
feldspar — (also felspar) ► NOUN ▪ a pale rock forming silicate mineral. ORIGIN German Feldspat field spar … English terms dictionary
feldspar — [feld′spär΄] n. [altered < Ger feldspath (now feldspat) < feld, FIELD + spath, spar < IE base * spe , long, flat board > SPOON, SPADE1] any of several light colored, hard, glassy, monoclinic or triclinic minerals made up of aluminum… … English World dictionary
feldspar — /feld spahr , fel /, n. any of a group of minerals, principally aluminosilicates of potassium, sodium, and calcium, characterized by two cleavages at nearly right angles: one of the most important constituents of igneous rocks. Also, felspar.… … Universalium
feldspar — noun Etymology: modification of obsolete German Feldspath (now Feldspat), from German Feld field + obsolete German Spath (now Spat) spar Date: 1772 any of a group of crystalline minerals that consist of aluminum silicates with either potassium,… … New Collegiate Dictionary
feldspar — noun Any of a large group of rock forming minerals that, together, make up about 60% of the earths outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal… … Wiktionary
feldspar — the generic name for a group of minerals made up of aluminium silicate along with calcium, potassium or sodium. A component of granite … Geography glossary
feldspar — feld|spar [ˈfeldspa: US a:r] n [U] [Date: 1700 1800; : German; Origin: feldspath, from feld field + spath type of mineral] a type of grey or white mineral … Dictionary of contemporary English
feldspar — feld|spar [ fel,spar ] noun uncount a type of hard pale stone … Usage of the words and phrases in modern English
