plagioclasticadj.

Brit.

/ˌpleɪdʒɪə(ʊ)ˈklastɪk/, U.S.

/ˈˌpleɪdʒiəˈklæstɪk/

Origin: Formed within English, by compounding. Etymons: plagio- comb. form, -clastic comb. form.

Etymology: < plagio- comb. form + -clastic comb. form, after plagioclase n. Compare German plagioklastisch (1847).

Mineralogy.

Designating or characterized by feldspars which have crystal cleavages at an oblique angle to each other; relating to or of the nature of plagioclase. Cf. orthoclastic adj.

ΘΚΠ

the world > the earth > minerals > mineral structure or appearance > [adjective] > cleavage or fracture

beddy1709

splintery1794

conchoid1802

conchoidal1802

graphic1814

axotomous1834

fendillated1853

plagioclastic1869

plagioclasic1913

1869 Edinb. Geol. Soc. Jrnl. 2 5 Plagioclastic felspars.

1879 F. Rutley Study of Rocks x. 91 The plagioclastic..or those in which the cleavage planes intersect at angles other than 90°.

1891 Manufacturer & Builder May 104/1 Granite..is a crystalline-granulated rock, consisting in its typical varieties of orthoclase, quartz and mica, to which a plagioclastic feldspar is usually added.

1900 Proc. Royal Soc. 67 479 The plagioclastic felspar is in fair preservation, and, perhaps, is labradorite.

1980 Jrnl. Brit. Astron. Assoc. 90 346 The differentiation of the plagioclastic highland basalts required an early vast magma pool.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	plagioclastic
释义	plagioclasticadj. Brit. /ˌpleɪdʒɪə(ʊ)ˈklastɪk/, U.S. /ˈˌpleɪdʒiəˈklæstɪk/ Origin: Formed within English, by compounding. Etymons: plagio- comb. form, -clastic comb. form. Etymology: < plagio- comb. form + -clastic comb. form, after plagioclase n. Compare German plagioklastisch (1847). Mineralogy. Designating or characterized by feldspars which have crystal cleavages at an oblique angle to each other; relating to or of the nature of plagioclase. Cf. orthoclastic adj. ΘΚΠ the world > the earth > minerals > mineral structure or appearance > [adjective] > cleavage or fracture beddy1709 splintery1794 conchoid1802 conchoidal1802 graphic1814 axotomous1834 fendillated1853 plagioclastic1869 plagioclasic1913 1869 Edinb. Geol. Soc. Jrnl. 2 5 Plagioclastic felspars. 1879 F. Rutley Study of Rocks x. 91 The plagioclastic..or those in which the cleavage planes intersect at angles other than 90°. 1891 Manufacturer & Builder May 104/1 Granite..is a crystalline-granulated rock, consisting in its typical varieties of orthoclase, quartz and mica, to which a plagioclastic feldspar is usually added. 1900 Proc. Royal Soc. 67 479 The plagioclastic felspar is in fair preservation, and, perhaps, is labradorite. 1980 Jrnl. Brit. Astron. Assoc. 90 346 The differentiation of the plagioclastic highland basalts required an early vast magma pool. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1869
随便看	chorically choriccer choriccest choricer choricest chorics chorine chorines choring chorio chorio- chorio-allantoic chorio-allantois chorio-epithelioma chorioallantoes chorioallantoic chorioallantois chorioallantoises choriocarcinoma choriocarcinomas choriocarcinomata chorioepithelioma chorioid chorioidal chorioids