Intelligence and Miscellanies.—Domestic. 187 
. Massive yellow Oxid of Tungsten—On page 52 of 
a present volume and number, we have already mention- 
ed a yellow een oxid of Pangaien, which occurs, 
as an incrustation, upon t nd manganesian oxid 
of that metal (wolfram) found in Mr. Lane! s mine at Hunt- 
ington. We have now discovered the massive yellow oxid 
of Tungsten Sune some specimens brought us for exami- 
nation by Mr. 
The colour of this mineral varies, from orange yellow, 
and chrome yellow, to yellowish grey ; it is brittle, fracture 
between conchoidal and small foliated, lustre adamantine 3 
of 
taste, is infusible and unalterable by the blow-pipe; specific 
gravity of the purer specimens 6. water being 1. insoluble i in 
— but by digestion in nitric acid, the powder, which is 
reyisb, assumes a very brilliant yellow colour, and would 
probably afford a fine pigment. 
It is readily soluble in warm liquid ammonia, and is pre- 
cipitated white by acids; the precipitate, by standing, re-ac- 
quires the yellow colour. 
he gangue is quartz, and minute veins of this substance 
and of what appears to be the ferruginous tungsten are dis- 
seminated through some of the masses ; the specific gravity 
of the impure specimens falls between 5. and 6. We have 
one specimen engaged in quartz and much broken, which, 
(we say it however without laying much emphasis upon | the 
impression,) appears to be part of a crystal; we co 
ture an Lica on ; this fragment is about one inch in 
diam 
We Ane from Mr. Lane that this mineral is found 
in tolerable abundance in his mine. 
REMARK. 
Mite digesting acids upon the powder of this oxid of 
tungsten, we examined the liquid for lime, but, without 
discovering any; at present therefore, we do not see that it 
ought to be confounded with the calcareous tungsten, which 
indeed appears very differently : A more accurate examina- 
tion than we have been able to make would be necessary in 
order to decide whether the tungsten is in this case com- 
