| 单词 | rhodium gold |
| 释义 | > as lemmasrhodium gold rhodium gold n. [compare German Rhodiumgold (1841)] now rare a native alloy of gold and rhodium. ΘΚΠ the world > the earth > minerals > types of mineral > native elements and alloys > [noun] > native gold gold dust1607 virgin gold1673 sand gold1766 vein gold1834 rhodium gold1844 free gold1854 shot gold1858 flour-gold1869 stream-gold1875 1844 J. D. Dana Syst. Mineral. (ed. 2) 460 The rhodium gold has the specific gravity 15·5–16·8. It is brittle, and contains, according to Del Rio, 34 to 43 per cent. of Rhodium. 1870 Sci. Opinion 3 535/2 With bisulphate of potash, sulphate of rhodium and potassium was exhibited, and the presence of rhodium gold proven. 1996 P. M. Rao tr. I. Ya. Nekrasov Geochem., Mineral. & Genesis Gold Deposits iii. 86 Iridium and rhodium gold are encountered in nature very rarely and data on the maximum content of iridium and rhodium in gold is unreliable in most cases. < as lemmas |
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