英语词汇“nail-head spar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

nail-head spar

nail-head spar n. Mineralogy a variety of calcite in which the crystals resemble nail heads, being flat rhombohedra mounted on hexagonal prisms.

ΚΠ

1851 Amer. Jrnl. Sci. 62 396 Calcspar..variety called Nail-head Spar.

1902 H. A. Miers Mineral. i. 84 In the so-called ‘nail-head spar’ of Cumberland..scalenohedra of calcite..are terminated by rhombohedra whose cleavages are parallel to those of the scalenohedron.

1954 J. F. Kirkaldy Gen. Princ. Geol. xi. 155 (table) Name... Calcite... Common Form... Nail-head spar, flat rhombohedra on hexagonal prism. Dog-tooth spar, scalenohedra on hexagonal prism.

extracted from nail headn.

as lemmas

单词	nail-head spar
释义	> as lemmas nail-head spar nail-head spar n. Mineralogy a variety of calcite in which the crystals resemble nail heads, being flat rhombohedra mounted on hexagonal prisms. ΚΠ 1851 Amer. Jrnl. Sci. 62 396 Calcspar..variety called Nail-head Spar. 1902 H. A. Miers Mineral. i. 84 In the so-called ‘nail-head spar’ of Cumberland..scalenohedra of calcite..are terminated by rhombohedra whose cleavages are parallel to those of the scalenohedron. 1954 J. F. Kirkaldy Gen. Princ. Geol. xi. 155 (table) Name... Calcite... Common Form... Nail-head spar, flat rhombohedra on hexagonal prism. Dog-tooth spar, scalenohedra on hexagonal prism. extracted from nail headn. < as lemmas
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