On the summit of the falk there is generally a mound known as tas or barkhus composed of white sand which stands out conspicuously against the deep red of the surrounding deserts; the exterior slopes are comparatively gentle.
Tantalum forms a sulphide, TaS 2, and two nitrides, TaN 2 and Ta3N5, have been described.
This page gives an overview of all articles in the 1911 Brittanica which are alphabetized under Tas to Tem.