| 单词 | black tellurium |
| 释义 | > as lemmasblack tellurium black tellurium n. Mineralogy = nagyagite n. ΘΚΠ the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > galena group > lead telluride black tellurium1821 tellurium glance1821 nagyagite1849 1810 J. Murray Elements Chem. II. vii. iii. 264 In the black tellurium ore, a number of metals are combined with a little sulphur, the composition, as stated by Klaproth, being tellurium 82, lead 54, gold 9, copper 1.3, silver 0.5, and sulphur 3.] 1821 R. Jameson Man. Mineral. 281 (heading) Genus IV. Tellurium-Glance, or Black Tellurium. 1923 H. H. Read Rutley's Elem. Mineral. (ed. 21) ii. 376 Nagyagite: Black Tellurium... Telluride and sulphide of gold and lead. 2010 C. W. Allin Encycl. Global Resources II. 528/1 Similarly, sylvanite and nagyagite (black tellurium) contain gold and silver, but in different arrangements and ratios. < as lemmas |
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