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feldspar    音标拼音: [f'ɛldsp,ɑr]
n. 长石

长石

feldspar
n 1: any of a group of hard crystalline minerals that consist of
aluminum silicates of potassium or sodium or calcium or
barium [synonym: {feldspar}, {felspar}]

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. They occur in
crystals and crystalline masses, vitreous in luster, and
breaking rather easily in two directions at right angles to
each other, or nearly so. The colors are usually white or
nearly white, flesh-red, bluish, or greenish.
[1913 Webster]

Note: The group includes the monoclinic (orthoclastic)
species orthoclase or common potash feldspar, and the
rare hyalophane or baryta feldspar; also the triclinic
species (called in general plagioclase) microcline,
like orthoclase a potash feldspar; anorthite or lime
feldspar; albite or soda feldspar; also intermediate
between the last two species, labradorite, andesine,
oligoclase, containing both lime and soda in varying
amounts. The feldspars are essential constituents of
nearly all crystalline rocks, as granite, gneiss, mica,
slate, most kinds of basalt and trachyte, etc. The
decomposition of feldspar has yielded a large part of
the clay of the soil, also the mineral kaolin, an
essential material in the making of fine pottery.
Common feldspar is itself largely used for the same
purpose. Feldspathic


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  • Feldspar - Wikipedia
    Feldspar is a common raw material used in glassmaking, ceramics, and to some extent as a filler and extender in paints, plastics, and rubber In the US, about 66% of feldspar is consumed in glassmaking, including glass containers and glass fibre
  • Feldspar | Properties, Uses, Types, Facts | Britannica
    Feldspar, any of a group of aluminosilicate minerals that contain calcium, sodium, or potassium Feldspars make up more than half of Earth’s crust, and professional literature about them constitutes a large percentage of the literature of mineralogy
  • Feldspar - Mineralogy, Identification, Uses | Britannica
    The feldspar-rich rocks larvikite and a few anorthosites are employed as both interior and exterior facing slabs In addition, several feldspars are used as gemstones
  • The 12 Different Types Of Feldspar (With High-Quality Photos)
    Feldspar is one of the most common minerals found in the Earth’s crust, and it forms some really fascinating varieties Amazonite, orthoclase, and microcline are great examples of the types of feldspar, each with their own unique appeal and characteristics
  • Feldspar minerals: properties, types, uses - ZME Science
    What is Feldspar? Feldspar refers to a group of aluminum tectosilicate minerals It contains a mixture of sodium, potassium, calcium, and barium, arranged in a variety of crystal types
  • Feldspar - Wikiwand
    Feldspar is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium The most common members of the feldspar group are the plagioclase (sodium-calcium) feldspars and the alkali (potassium-sodium) feldspars
  • Feldspar minerals make up over 50% of Earths crust.
    Feldspar minerals occur in igneous, metamorphic and sedimentary rocks throughout the world They are used to make glass, ceramics, paint, plastics, rubber and many other products Moonstone, labradorite, sunstone and amazonite are examples of feldspar gem materials
  • What Is Feldspar? Types, Properties, and Industrial Uses
    Feldspar mineral refers to a group of rock-forming aluminosilicate minerals that contain varying amounts of potassium, sodium, and calcium Feldspars are categorized into a number of subtypes according to chemical composition; all feldspars have a generally similar crystalline structure
  • What Are The Uses Of Feldspar? - WorldAtlas
    Feldspar is extracted from rocks and crushed into fine powder or granules that are used in the manufacturing of ceramic tile, plate glass, pottery, paint, plastics, and fiberglass insulation
  • Gallery of Feldspars - ThoughtCo
    Feldspars are a group of closely related minerals that together make up the majority of the Earth's crust All of them have a hardness of 6 on the Mohs scale, so any glassy mineral that's softer than quartz and cannot be scratched with a knife is very likely to be a feldspar





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