英语词汇“plagioclase feldspar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Any of a series of triclinic feldspars (sodium and calcium aluminosilicates), originally characterized as having two cleavages at an oblique angle, which occur widely in rocks and as free crystals. Also plagioclase feldspar.The chief members of the series, in order of proportion of sodium to calcium, are albite (sodium aluminosilicate), oligoclase, andesine, labradorite, bytownite, and anorthite (calcium aluminosilicate).

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plagioclase1868

1868 J. D. Dana Syst. Mineral. (ed. 5) Suppl. 802 Plagioclase, Breithaupt's name for the group of triclinic feldspars, the two prominent cleavage directions in which are oblique to one another.

1879 F. Rutley Study of Rocks x. 91 In the case of plagioclase the crystals exhibit numerous bands of different colours.

1941 Proc. Prehistoric Soc. 7 61 Sparsely distributed small phenocrysts of turbid plagioclase felspar.

1971 Sci. Amer. Oct. 50/3 The plagioclase in the moon rocks..is almost pure anorthite (CaAl₂Si₂O₈).

1990 C. Pellant Rocks, Minerals & Fossils 92 Different forms of plagioclase occur with the changing ratio of Na and Ca in the plagioclase chemistry.

单词	plagioclase feldspar
释义	> as lemmas plagioclase feldspar Any of a series of triclinic feldspars (sodium and calcium aluminosilicates), originally characterized as having two cleavages at an oblique angle, which occur widely in rocks and as free crystals. Also plagioclase feldspar.The chief members of the series, in order of proportion of sodium to calcium, are albite (sodium aluminosilicate), oligoclase, andesine, labradorite, bytownite, and anorthite (calcium aluminosilicate). ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > plagioclase plagioclase1868 1868 J. D. Dana Syst. Mineral. (ed. 5) Suppl. 802 Plagioclase, Breithaupt's name for the group of triclinic feldspars, the two prominent cleavage directions in which are oblique to one another. 1879 F. Rutley Study of Rocks x. 91 In the case of plagioclase the crystals exhibit numerous bands of different colours. 1941 Proc. Prehistoric Soc. 7 61 Sparsely distributed small phenocrysts of turbid plagioclase felspar. 1971 Sci. Amer. Oct. 50/3 The plagioclase in the moon rocks..is almost pure anorthite (CaAl₂Si₂O₈). 1990 C. Pellant Rocks, Minerals & Fossils 92 Different forms of plagioclase occur with the changing ratio of Na and Ca in the plagioclase chemistry. extracted from plagioclasen. < as lemmas
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> as lemmas