| 释义 |
jadeite Min.|ˈdʒeɪdaɪt|
[Named 1863; f. jade n.2 + -ite.]
One of the two minerals commonly included under the name of jade (q.v.), of which it is the hardest and most highly prized variety. Hence jadeitic |dʒeɪˈdɪtɪk| a., approximating to jadeite in composition.
1865Lubbock Preh. Times iv. (1878) 82. 1868 [see jade n.2 1]. 1875Ure's Dict. Arts III. 6 Jadeite is a mineral closely resembling true nephrite in external characters,..it is essentially a silicate of alumina and soda. Ibid. 7 In prehistoric times, jade and jadeite were used for amulets and ornaments. 1965Prof. Papers U.S. Geol. Survey No. 525. 25 (heading) Composition of jadeitic pyroxene from the California metagraywackes. 1971I. G. Gass et al. Understanding Earth viii. 116/1 A notable feature of the overall mineralogy of meteorites is the absence of phases, such as..jadeitic pyroxenes, indicative of high pressure. |