| 释义 |
empressite Min.|ˈɛmprɪsaɪt|
[f. the name of the Empress-Josephine mine, where it was first found: see -ite1.]
A telluride of silver, of disputed composition (see quots.).
1914W. M. Bradley in Amer. Jrnl. Sci. 4th Ser. XVIII. 163 Some years ago, what appeared to be a new mineral was found in the Empress-Josephine Mine in the Kerber Creek District of Colorado by Professor R. D. George of the University of Colorado... The mineral gives a ratio of practically Ag:Te::1:1... The name empressite has been given to it by Professor George. 1956Amer. Mineralogist XLI. 722 Ag5Te3 is synthetic empressite. Ag5—xTe3 is the formula deduced, for the mineral, from cell dimensions and density of analyzed crystals. 1964Ibid. XLIX. 326 Chemical analysis..and x-ray single crystal data on natural material from the type locality show that Bradley's original composition of AgTe was correct, and it is proposed that the name empressite be retained for this material. 1965Ibid. L. 797 The mineralogy of the silver tellurides is still far from completely understood. Is it not then premature to redefine the term ‘empressite’ for which a composition near Ag5Te3 has long been accepted? 1968Ibid. LIII. 1513 ‘Empressite’ from the type locality consists of two optically distinct phases with the formulae AgTe and Ag5—xTe3. |