66 J. P. Kimball on Sodalite and Eleolite. 
ished in thickness “ wedge-like to a mere line at the termination.” — 
tunately enough, the discovery of the minerals was not made in 
time to rescue this precious vein-stone from the hands of the 
further associated with cancrinite and, as at Salem, with zircon ; 
but instead of. occupying a vein as in the Salem instance, exis 
as accidental constituents of a granitic rock composed of quartz, 
the Salem boulder, and the dissimilarit between this and the 
Litchfield rock as to petrographic shania tend to preclude 
the possibility of the two having a common source. ~ 
dalite—The sodalite from Salem has quite the same charac: 
i Mts. with specimens of 
which I have been able to compare it, excepting that the former. 
sub-translucent masses having an indistinct cleavage. Its lustre 
18 greasy, and its color beautiful lavender blue. 
a Gea erminations of its specific gravity were 
made with different portions of the ces oe the results 
as follows: (2294, 2°308, 2314. 
> J.D. Whitney: Pogeendorff’s Annalen, Ixx, 434 
+ Sentt: Classifcatic® und Beschreibung der Felsarten, 218. 
