phonolite

pho·no·lite

P0255200 (fō′nə-līt′)n. A light-colored volcanic rock composed largely of feldspars.

pho′no·lit′ic (-lĭt′ĭk) adj.

phonolite

(ˈfəʊnəˌlaɪt) n (Geological Science) a fine-grained volcanic igneous rock consisting of alkaline feldspars and nepheline[C19: via French from German Phonolith; see phono-, -lite] phonolitic adj

pho•no•lite

(ˈfoʊn lˌaɪt)

n. a fine-grained volcanic rock composed chiefly of alkali feldspar and nepheline. [1820–30; < French < German Phonolith. See phono-, -lite] pho`no•lit′ic (-ˈɪt ɪk) adj.

Phonolite

enUK

phonolite

[′fō·nə‚līt] (petrology) A light-colored, aphanitic rock of volcanic origin, composed largely of alkali feldspar, feldspathoids, and smaller amounts of mafic minerals.

Phonolite

(from the Greek phone,”sound,” and lithos,”stone”), the extrusive equivalent of nepheline syenite. Phonolite consists of feldspathoids (nepheline and other rocks), sanidine, and chromatic minerals (alkaline pyroxene and amphibole). It often contains phenocrysts of hauynite, noselite, and, sometimes, plagioclase. Its texture is usually porphyritic. The cleavage is laminar; individual plates of phonolite ring strongly when struck with a hammer (hence the name). Phonolite is used as gravel in road paving and as an aggregate for concrete.

单词	phonolite
释义	phonolite enUK pho·no·lite P0255200 (fō′nə-līt′)n. A light-colored volcanic rock composed largely of feldspars. pho′no·lit′ic (-lĭt′ĭk) adj. phonolite (ˈfəʊnəˌlaɪt) n (Geological Science) a fine-grained volcanic igneous rock consisting of alkaline feldspars and nepheline[C19: via French from German Phonolith; see phono-, -lite] phonolitic adj pho•no•lite (ˈfoʊn lˌaɪt) n. a fine-grained volcanic rock composed chiefly of alkali feldspar and nepheline. [1820–30; < French < German Phonolith. See phono-, -lite] pho`no•lit′ic (-ˈɪt ɪk) adj. Phonolite enUK phonolite [′fō·nə‚līt] (petrology) A light-colored, aphanitic rock of volcanic origin, composed largely of alkali feldspar, feldspathoids, and smaller amounts of mafic minerals. Phonolite (from the Greek phone,”sound,” and lithos,”stone”), the extrusive equivalent of nepheline syenite. Phonolite consists of feldspathoids (nepheline and other rocks), sanidine, and chromatic minerals (alkaline pyroxene and amphibole). It often contains phenocrysts of hauynite, noselite, and, sometimes, plagioclase. Its texture is usually porphyritic. The cleavage is laminar; individual plates of phonolite ring strongly when struck with a hammer (hence the name). Phonolite is used as gravel in road paving and as an aggregate for concrete.
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