tetradymite Min.
(tɪˈtrædɪmaɪt)
[a. Ger. tetradymit (W. Haidinger, 1831), f. Gr. τετράδυµος fourfold + -ite1.]
Telluride of bismuth, found in pale steel-grey laminæ with a bright metallic lustre.
(The name has also been applied to wehrlite.)
| 1850 Ansted Elem. Geol. §491 Tetradymite, Tellurium, and bismuth. 1859 Page Handbk. Geol. Terms (1865), Tetradymite.., sulphotelluride of bismuth..from the quadruple macles in which its crystals usually appear. 1874 Proc. Amer. Phil. Soc. XIV. 224 The sulphurous variety of tetradymite has been observed at several new localities. |