feldspar

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feld·spar

 (fĕld′spär′, fĕl′-) also fel·spar (fĕl′-)
n.
Any of a group of abundant rock-forming minerals occurring in igneous, metamorphic, and sedimentary rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely barium. About 60 percent of the earth's outer crust is composed of feldspar.

[Partial translation of obsolete German Feldspath : Feld, field (from Middle High German veld, from Old High German feld; see pelə- in Indo-European roots) + Spath, spar.]

feldspar

(ˈfɛldˌspɑː; ˈfɛlˌspɑː) or

felspar

n
(Minerals) any of a group of hard rock-forming minerals consisting of aluminium silicates of potassium, sodium, calcium, or barium: the principal constituents of igneous rocks. The group includes orthoclase, microcline, and the plagioclase minerals
[C18: from German feldspat(h), from feld field + spat(h) spar3]
feldspathic, felˈspathic, ˈfeldspathˌose, ˈfelspathˌose adj

feld•spar

(ˈfɛldˌspɑr, ˈfɛl-)

also felspar



n.
any of a group of crystalline 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.
[1765–75; alter. of feldspath < German (Feld field + Spat(h) spar)]

feld·spar

(fĕld′spär′, fĕl′spär′)
Any of a group of abundant minerals consisting of silicates of aluminum with potassium, sodium, and calcium. Feldspars range from white, pink, or brown to grayish blue in color. They occur in igneous, sedimentary, and metamorphic rocks and make up more than 60 percent of the Earth's crust.

feldspar

Any of a group of minerals comprising aluminum silicates and a metal (calcium, potassium, or sodium).
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.feldspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
atomic number 14, Si, silicon - a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
orthoclase - a white or colored monoclinic feldspar
oligoclase, plagioclase - any of a series of triclinic feldspars that form rocks
moonstone - a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar
spar - any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
Translations
maasälpä

feldspar

[ˈfeldspɑːʳ] Nfeldespato m
References in periodicals archive ?
Quartz, feldspars, hematite, gypsum, chlorite and goethite minerals were obtained from above methods.
The collaboration will integrate Science Incs strength in direct-to-consumer audience development with Feldspars expertise in fast rototyping and content and brand development to produce quality animation for social and mobile channels.
Feldspars are a group of minerals found overoo percent of the earth's crust.
Each thin section was etched and stained using HF and Na-cobaltinitrite to help identify feldspars (Chayes, 1952).
because of charge balance difficulties, enters ferromagnesian minerals rather than feldspars (Wager and Mitchell, 1951).
1: How to identify and buy tanzanite, ammolite, rhodochrosite, zultanite, sunstone, moonstone, & other feldspars.
Minspar #3, #4, #7 and #10 feldspars used in translucent or clear plastics because of its low-tint strength, stain resistance, high loading, and reportedly excellent abrasion resistance.
Furthermore, concretions and nodules are also enriched in feldspars.
The moist, warm climate of this region leads to rapid weathering of feldspars, so that the soil in the upper parts of the valleys is a sort of humus enriched with granite sand.
1987, Determining (Al,Si) distribution and strain in alkali feldspars using lattice parameters and diffraction-peak positions: A review, American Mineralogist, v.
The MWG contains feldspars of various textures and composition, including abundant plagioclase-mantled K-feldspar (rapakivi texture), boxy and spongy cellular plagioclase, and plagioclase that show An spikes and/or central cures of higher Ca content.