ytter Min.
(ˈɪtə(r))
The first element of Ytterby (see next) used attrib. = combined with yttria, yttriferous, yttrious, in imitation of Sw. or Ger., as in Sw. ytterjord, G. yttererde (ytter earth).
| 1805 R. Jameson Syst. Min. II. 585 Yttertantalite... According to Eckeberg, it is composed of tantalium, the new earth called yttria, and iron. 1877 E. B. Dana's Text-bk. Min. 281 Yttriferous, or Ytter-garnet. 1897 Ann. Rep. Smithsonian Inst. 239 As early as 1794 Gadolin had separated from the gadolinite of Ytterby an earth which he called ytter earth. |