felsiten.

/ˈfɛlsʌɪt/

Etymology: < fels (in felspar feldspar n.) + -ite suffix¹. The name was given by Kirwan himself (not by Widenmann as his language might seem to imply), and its form is due to his erroneous explanation of feldspath (see feldspar n.).

Mineralogy.

a. = felstone n.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > felsite

petrosilex1770

felsite1794

patrinite1811

felstone1858

1794 R. Kirwan Elements Mineral. (ed. 2) I. 326 Felsite, or compact Felspar of Widenmann.

1804 Edinb. Rev. 3 310 Kirwan..has called a substance in question Felsite, and not compact fieldstone.

1868 J. D. Dana Min. §315 (1880) 352 Felsite..constitutes the base of albite porphyry.

1882 W. J. Harrison in Knowledge 6 Oct. 305 A cream-coloured felsite.

b. attributive, as in felsite porphyry (see quot. 1877).

ΚΠ

1877 J. Le Conte Elements Geol. (1879) ii. 206 Felsite porphyry..consists of a grayish or reddish feldspathic mass, containing large crystals of lighter colored and purer feldspar.

Derivatives

felˈsitic adj. consisting of or containing felsite or felstone.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > felsite

petrosiliceous1798

felsitic1879

1879 Prof. Hughes in Q. Jrnl. Geol. Soc. 35 682 The Felsitic series, consisting chiefly of quartz felsites and probably also of volcanic origin.

1880 Rudler in Encycl. Brit. XI. 49 Crystals of orthoclase disseminated through a felsitic matrix. In these veins the granite is apt to..become either fine-grained or felsitic.

This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2021).

单词	felsite
释义	felsiten. /ˈfɛlsʌɪt/ Etymology: < fels (in felspar feldspar n.) + -ite suffix¹. The name was given by Kirwan himself (not by Widenmann as his language might seem to imply), and its form is due to his erroneous explanation of feldspath (see feldspar n.). Mineralogy. a. = felstone n. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > felsite petrosilex1770 felsite1794 patrinite1811 felstone1858 1794 R. Kirwan Elements Mineral. (ed. 2) I. 326 Felsite, or compact Felspar of Widenmann. 1804 Edinb. Rev. 3 310 Kirwan..has called a substance in question Felsite, and not compact fieldstone. 1868 J. D. Dana Min. §315 (1880) 352 Felsite..constitutes the base of albite porphyry. 1882 W. J. Harrison in Knowledge 6 Oct. 305 A cream-coloured felsite. b. attributive, as in felsite porphyry (see quot. 1877). ΚΠ 1877 J. Le Conte Elements Geol. (1879) ii. 206 Felsite porphyry..consists of a grayish or reddish feldspathic mass, containing large crystals of lighter colored and purer feldspar. Derivatives felˈsitic adj. consisting of or containing felsite or felstone. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] > felsite petrosiliceous1798 felsitic1879 1879 Prof. Hughes in Q. Jrnl. Geol. Soc. 35 682 The Felsitic series, consisting chiefly of quartz felsites and probably also of volcanic origin. 1880 Rudler in Encycl. Brit. XI. 49 Crystals of orthoclase disseminated through a felsitic matrix. In these veins the granite is apt to..become either fine-grained or felsitic. This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2021). < n.1794
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