316 Scientific Intelligence. 
93. Additional note concerning the Tungsten and Tellurium. 
We have not room to insert in the present number, a descrip- 
~~ tion-and a chemical examination of the ores of tungsten and tel- 
lurium recently discovered in Connecticut; they will appear i in 
ournext. — 
In the mean time it'may be stated, that the tungsten and tellu- 
rium aré found blended in the same pieces, but whether in mere 
mixture, or in chemical combination, is not yet quite determin- 
ed. Many specimens of the tungsten exist without the telluri- 
rium, but every piece which has afforded tellurium has also af- 
forded tungsten, and in greater abundance. Even in well defined 
crystals, both metals have been found in the same crystal, and 
where the external a appearance was homogeneous. In other spe- 
cimens a difference seems to be apparent, and a proper ore of tellu- 
rium appears to be blended with a proper ore of tungsten. This 
latter ore is the wolfram, composed of oxide of tungsten, oF as 
some choose to say, tungstic acid combined with iron and manga- 
nese. The crytals, however, are octahedral, a fact which we be- 
Heve® is ‘hot owes of this a by authors, although this ; 
yeni 
1 
z 
tore aces hee aa 
The Bismuth mine in whick these ores are found is the 
property of Mr. Ephraim Lane. Letters addressed, post paid, 
to him at Monroe, Connecticut, will find him through h the 
Post Office ; and he will, for a reasonable compensations 
pack boxes more or less extensive, for mineralogists and oth- 
ers. AS Mr. Lane is by occupation a farmer, and is obliged 
4 toblast a ene gangue in order to obtain his specimens, he can- 
‘pected eee Lt = ey mite. 
ommon iron pyrites, and copper Sie (th 
two latter crystallized) galena, blende, tungsten, tellurium, ke. 
It is expected that the shaft will soon be sunk deeper, — 
probably a more abundant supply of good ——— will be ob- 
tained. 
_ N.B. The silver and galena are the least abundant. 
March 8th, 1819. 
; 
4 
