ee 
Misceliancous Localities of Minerals. 17 
15. Specular Oxide of Jron.—But few specimens of this 
mineral have yet been found, and they were in detached 
pieces, at the bottom of the hill. Itis not affected by the 
magnet, but the prussiate of potash, poured into a solution of 
it by nitric acid, flings down a fine blue precipitate. 
16. Arsenical Iron.—Only one specimen of this mineral 
has yet been discovered, and that was in the fissure of a vein 
of quartz, traversing a body of coarse granite ; it was in a 
globular form, about the size of a six pound shot, fine grained, 
exhibiting a fine silver-white lustre, and being uncommonly 
heavy. By friction, it exhaled the odour of garlic. 
All these minerals are found at the same place, on the top 
and declivity of a small hill, its surface measuring 
erbaps one acre, and elevated not more than forty or fifty 
eet above the land around it. The base of the whole hill 
is probably a ledge ; but it breaks the surface only on the 
top, in the space of about four rods square, exhibiting a 
ledge of eoarse granite, thickly filled with mica and tourma- 
lines, of which the black principally predominates. But 
little search has been made, and only in one place have we 
gone under the surface ; and it was there that we found the 
best specimens loose in the soil. 
17. Graphite-—This occurs in Greenwood about six miles 
from here, in a north-westerly direction, and is found attached, 
from one eighth of an inch to one inch in depth, to the surface 
of a coarse granite, and occasionally very much mixed up 
with the black tourmaline. Sulphuret of molybdena is also 
found in the same ledge, in connexion with sulphuret of 
1r0on. : ; : : 
18. Sulphuret of Molybdena.—This oceurs very frequently 
in most of our ledges, sometimes apparently communicating 
to them a slaty form. It is found in folia, disseminated 
through the rock-like mica ; and occasionally it is very diffi- 
cult to distinguish it, by mere inspeCtion, from the black 
mica, which it accompanies. This's pecimen seems to contain 
pyritous copper, and the feldspar is of a greenish colour. 
19. Staurotide in mica slate, which contains also minute 
crystals of garnet. It exists in plantation letter E, about 
40 miles from this, in the north eastern angle of this county, 
and was discovered a short time since, by the Hon. Enoch 
Lincoln, who informs me that it exists there in immense 
quantities, frequently presenting beautiful, well defined, 
erystallized forms. 
Vo. X.—No. 1, 3 
