felsite

fel·site

F0074200 (fĕl′sīt′)n. A fine-grained, light-colored igneous rock, composed chiefly of feldspar and quartz.

[fels(par) + -ite.]

fel·sit′ic (-sĭt′ĭk) adj.

felsite

(ˈfɛlsaɪt) or

felstone

n (Geological Science) any fine-grained igneous rock consisting essentially of quartz and feldspar[C18: fels(par) + -ite¹] felsitic adj

fel•site

(ˈfɛl saɪt)

n. a dense fine-grained igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts. [1785–95; fels (par) + -ite¹] fel•sit•ic (fɛlˈsɪt ɪk) adj.

Felsite

felsite

[′fel‚sīt] (petrology) A light-colored, fine-grained igneous rock composed chiefly of quartz or feldspar. A rock characterized by felsitic texture.

Felsite

a fine-grained acid extrusive rock consisting of potassic feldspar (orthoclase) and quartz. Felsite sometimes contains acid plagioclase and dark minerals, such as pyroxene and biotite. It results from the recrystallization of volcanic glass during diagenesis and the initial phase of metamorphism. Felsitic texture is characteristic of paleotypical rocks such as quartz porphyries, keratophyres, and orthoclase porphyries. The term “felsite” is sometimes emphasized in the name of a rock, for example, felsodacite and felsophyre.

单词	felsite
释义	felsite fel·site F0074200 (fĕl′sīt′)n. A fine-grained, light-colored igneous rock, composed chiefly of feldspar and quartz. [fels(par) + -ite.] fel·sit′ic (-sĭt′ĭk) adj. felsite (ˈfɛlsaɪt) or felstone n (Geological Science) any fine-grained igneous rock consisting essentially of quartz and feldspar[C18: fels(par) + -ite¹] felsitic adj fel•site (ˈfɛl saɪt) n. a dense fine-grained igneous rock consisting typically of feldspar and quartz, both of which may appear as phenocrysts. [1785–95; fels (par) + -ite¹] fel•sit•ic (fɛlˈsɪt ɪk) adj. Felsite felsite [′fel‚sīt] (petrology) A light-colored, fine-grained igneous rock composed chiefly of quartz or feldspar. A rock characterized by felsitic texture. Felsite a fine-grained acid extrusive rock consisting of potassic feldspar (orthoclase) and quartz. Felsite sometimes contains acid plagioclase and dark minerals, such as pyroxene and biotite. It results from the recrystallization of volcanic glass during diagenesis and the initial phase of metamorphism. Felsitic texture is characteristic of paleotypical rocks such as quartz porphyries, keratophyres, and orthoclase porphyries. The term “felsite” is sometimes emphasized in the name of a rock, for example, felsodacite and felsophyre.
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