508 
GEOLOGY OF THE FIRST DISTRICT. 
it, and even should it he argentiferous, it may not contain enough silver to make it worth 
separating. The ore contains much arsenic, and it may perhaps be profitably wrought to 
furnish the common white arsenic of the shops. It is well known that large quantities of this 
material are consumed for various purposes in this country, such as the manufacture of shot, 
flint glass, medicinal preparations, etc., and the supply is at present derived from Germany. 
This mine would probably supply the demands of commerce. 
This ore of arsenic has also been found in two localities in Warwick ; one in a vein not far 
from Mount Adam, between that and Edenville ; the other is thus described by Prof. Beck : 
“ There is a locality of arsenical minerals on the lands of Mr. B. Hopkins, near the village 
of Edenville in Orange county, which is particularly deserving of notice. I visited it in 
company with Dr. Horton during the last summer, and with some difficulty we succeeded in 
obtaining specimens of considerable interest to the mineralogist. These are, arsenical pyrites 
of a silver white color, occurring in a vein in the white limestone, and which I found to be com¬ 
posed of arsenic, sulphur and iron. Associated with this is the arseniate of iron, or cube ore, 
as it is called, from the primary form of its crystal, which here occurs as a coating, and pos¬ 
sesses a beautiful green color and an adamantine lustre. Every where investing the two pre¬ 
ceding minerals is a powder of a lemon-yellow color, which is ascertained to be the sulphuret 
of arsenic or native orpiment. In another part of the same vein is found a considerable quantity 
of the red oxide of iron, which, together with the sulphuret of arsenic, has undoubtedly been 
produced by the decomposition of the arsenical pyrites. And in addition to these metallic 
minerals, we have also arragonite in delicately radiated fibres and of a snow white color, and 
occasionally thin laminae of transparent sulphate of lime or selenite. On the whole, this is 
one of our most interesting localities, not only on account of the minerals which it affords, 
but of the apt illustration which it presents of the changes produced in the mineral kingdom 
through the influence of chemical agencies.” This vein is connected with the white lime¬ 
stone of Warwick. 
An ore of titanium (crichtonite) has been found in Warwick, and variable proportions of 
titanic acid are also contained in several of the magnetic iron ores of Putnam and Orange 
counties. 
Titanium ore has been found in several places in Putnam county. At almost every locality 
where augite and scapolite are found, (and the localities are numerous,) sphene or the silico- 
calcareous oxide of titanium is also found associated. Sphene, beautifully crystallized, was 
discovered by Dr. Barratt at Coldspring landing, in 1822, during the excavations for the foun¬ 
dation of the long block of buildings next the shore on the north side of the village. Speci¬ 
mens were obtained at that place in abundance by Dr. Barratt, and more beautiful than any 
that I have seen from any other part of the country. Titanium has, however, been applied 
to but one useful purpose, and that of comparatively trifling importance, viz. for tinging the 
enamel of artificial teeth of a slight yellowish color, like the natural teeth. It has also been 
found in a great number of localities in Orange county. Wherever observed, it is associated 
with augite, scapolite, and limestone. It seems almost confined in the First district to those 
rocks we have described as metamorphic. 
