rubellan Min.
(ˈruːbələn)
Also rubellane.
[f. L. rubell-us reddish.]
(See quot. 1868.)
| c 1830 Encycl. Metrop. (1845) VI. 508/2 Rubellan, Red Mica? 1868 Watts Dict. Chem., Rubellan, an altered biotite..occurring in small hexagonal forms, or a red colour, in a kind of wacke. 1888 Rutley Rock-forming Min. 197 Some varieties, as rubellane, show dark reddish-yellow or orange tints. |