120 Hydrate of Copper and Spodumene. 
A. os 17.000 colitaining oxygen 15.119 
B. 37.250 18.736 
- ect of copper, 45.175 % ad 9.011 
100.000 és 
-576 loss. 
It is therefore a bisilicate of 8. with water; and its 
mineralogical formula will be CS *+ Aq. 
2. Of the Spodumene.* 
In the mionth of November of the last year, a Nuttall 
brought to Philadelphia several minerals from Massachu- 
setts, among which was one which from its eacipe char- 
acters he suspected to be spodumene. On examining it 
chemically, I determined it to be that mineral, having ob- 
tained from it a portion of the new alkali, lithia, The spe- 
cimen submitted to examination was ofa white ol pauit 
was of a lamellar structure, of a pearly lustre, was F 
scratched glass, and was fusible before the blow- piper At 
yielded readily to mechanical division, and afforded a rhom- 
boidal prism whose angles were 100° 80’. In order to ob- 
tain the lithia from this mineral, a portion of it which had 
been previously pulverised was fused with an equal weight 
of caustic potash, and the fused mass dissolved in diluted 
muriatic acid. The muriatic solution was then evaporated 
to dryness, and the product digested for some time in warm 
alcohol. The alcohol on evaporation afforded a white de- 
liquescent salt of an acrid taste. That it contained neither 
lime nor potash was proved by its solution affording no 
ea either with oxalate of ammonia or witb muriate 
oe notice of the Spodumene was forwarded in February last, but 
00 late _ publication in the last number of the Journal. An ac- 
count ae it has since been published in the Journal of the Academy of Nat- 
ural Sciences of Philadelphia. 
