180 Dr. Mallet on the Rose-colored Mica of Goshen. 
Art, XIX.—On the Rose-colored Mica of Goshen, Mass.; by J. W. 
MAuLeEtT, Ph.D., Professor of Chem. in the Univ. of Alabama. 
s Mineralogy* it is noticed as ‘‘ of difficult 
alkaline constituents, and accordingly reduced a pure specimen 
to powder, and decomposed it by fusion with ee of lime 
and a little chlorid of calcium. The earths and oxyds of heavy 
metals having been removed in the usual way, and ammoniacal 
salts expelled, the chlorids of the alkalies were treated with a 
mixture of ether and absolute alcohol, and chlorid of lithium 
having been extracted by this solvent, the chlorids of potassium 
and sodium were separated by chlorid of platinum. 
The mica was found to yield: 
Potash, - - - 9°08 p. ¢. 
Soda, ~~ 3 bs 2 F. . -99 “ 
Lithia, - — - 64 
so that it contains the three fixed alkalies, but of these potash 
re 
man gives 75°-76° for the angle between the axes of the yellow: 
ish-green mica which occurs in the same granite vein with this 
rose-colored mineral at Goshen, and there can I think be little — 
* Fourth edition, vol. ii, p. 297. 
ca 
