284 Notice of Minerals in the vicinity of Providence. 
sand or sand mixed with aluminous matter, and at a consid- 
erable distance south of the primitive range. How it was 
formed or whence it came, is, to me, not easily explained. 
Some months since a mineral was received in Baltimore 
the first being the oxide of cobalt, chemically (I believe) 
associated with the radiated or stellated ore or black oxide 
of manganese. That found in the alluvial district near 
Baltimore contains, it is true the same oxides associa- 
ted, but the appearance of the mass and the situation when 
found in the sand pits, would incline one to suppose that a 
solution of these two substances had been formed upon @ 
lump of sand, cementing as it were the whole together. In 
this state it has a dark bluish appearance, a harsh rough san- 
dy texture, and is somewhat weighty. 
6. Notice of Minerals in the vitinity of Providence, (R. I.) 
_ ina letter to the Editor, dated Nov. 26, 1821, from Mr. 
Tuomas H. Wess. 
r— 
I have forwarded to you in the box sent Mr. George T. 
Bowen, a specimen of the green talc which I wrote you 
some time since, was found at North Providence. There 
are also in the box specimens of silvery talc, from Harris’ 
lime rocks, Smithfield, much better than the one I sent you 
before. It is found in considerable quantities attached to 
bitter spar. Among the minerals which have not hitherto 
been noticed, that occur in this vicinity, and elsewhere, are 
the following, viz :-— 
1. White fibrous tremolite,* found in considerable quat- 
tities, amongst hese lime stone, at Harris’ lime rocks, 
Smithfield, R. I. It gives out a fine phosphorescent light, 
when placed on a hot shovel, and also phosphoresces by 
friction, in a dark room. . 
2. Earthy tremolite at the same place. 
S ¢ 
* Mr. Bowen peci fthi. time ago, Vintiies. 
