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 ?
Minister of Trade and Industry Tarek Kabil issued a decision to keep current export duties unchanged for a number of mining materials, including talcum powder, quartz and feldspar, blocks of marble, granite, and sand for a year, starting 10 February.
Quartz, feldspar and chlorite minerals indicated that the sediments were transported from igneous and metamorphic rocks and the hematite and goethite indicated the continental environment for the studied formation.
The clay exposed here is mostly brick red in color showing oxidizing conditions, while the sandstone was mostly yellowish to grayish containing mainly mono and poly crystalline quartz and feldspar.
Feldspar Studios, a digital-first animation startup has joined hands with Science Inc.
9% interest in their unincorporated feldspar partnership from Colorminas, Brazil, the company said.
The partnership between AMG Mineracao and Colorminas was established in 2003 with the objective of producing and commercialising feldspar from tailings generated from AMG Mineracao's tantalum operations.
Lower Detour gold mineralization is mainly found within the southern portion of an altered feldspar porphyry intrusive characterized by brittle deformation, containing quartz and/or quartz-tourmaline veins with up to 5% pyrite and multiple occurrences of visible gold.
Technavio's analysts forecast the global feldspar market to grow at a CAGR of 4.
The predominant amount of sodium, potassium, or lithium determines which feldspar group it falls into.
These grains were by far the most abundant and included quartz, feldspar, rock fragments, heavy minerals and micas.
In present study Feldspar is used as adsorbent for the removal of Direct red 16 (textile dye).
The relative concentration of quartz over feldspar indicates that feldspar has either been destroyed by abrasion/chemical weathering or has been diluted by cycle quartz.