354. W.F. Hillebrand—Léllingite and other Minerals. 
instead of the brachydome mentioned by Sandberger as pecu- 
liar to the rhombic CoAs, render necessary, however, its classi- 
fication with léllingite. 
CoSsALITE. 
In the collection of the Colorado Scientific Society, are a few 
specimens of a mineral from the Comstoc i 
The outer zone of the small bodies spoken of is found on 
close examination to be a mixture of two or more minerals, 
among which minute grains of pyrite were alone recognizable. 
Sufficient material was however obtained for analysis, ie 
from all impurity, except a little pyrite and 1:29 per cent of - 
» 
* Inaugural Dissertation, Freiberg, 1883. 
