| 释义 |
isotypic, a.|aɪsəʊˈtɪpɪk|
1. Biol. [f. prec. + -ic.] That is an isotype (sense 1).
2. Min. [ad. G. isotyp (F. Rinne 1894, in Neues Jahrb. f. Mineral., Geol. u. Palaeontol. i. 55).] Having the same or similar crystal structure (i.e. isostructural) and, with some authors, having in addition analogous chemical formulæ; exhibiting such similarity. Const. with.
1929H. L. Bowman Miers's Mineral. (ed. 2) 251 Substances which thus have the same type of composition and resemble one another in their angles and structure have been described by F. Rinne as ‘isotypic’. 1942Mineral. Abstr. VIII. 220 It [sc. berlinite] is therefore identical with artificial AlPO4..and isomorphous with AlAsO4.., which are isotypic with quartz. 1943Amer. Mineralogist XXVIII. 598 Na2BeF4 was shown by them to be isotypic with γ-Ca2SiO4. 1943Science 22 Jan. 98/2 Investigations..have revealed new isomorphic and isotypic relationships among silicates and phosphates. 1959W. H. Dennen Princ. Mineral. iii. 104 Isotypic minerals are those with both isostructural characteristics and chemical similarity. Ibid., The members of an isomorphous series are isotypic, but..isotypic minerals are not necessarily isomorphous. 1959W. F. de Jong Gen. Crystallogr. 182 If the structures of two compounds are entirely or nearly equal, and if the ratios of the dimensions do not differ much, the structures are called isotypic. NaCl and PbS form isotypic structures. 1968Mason & Berry Elem. Mineral. (new ed.) iii. 83 Sometimes the terms isostructural or isotypic are used instead of isomorphous. |