• 
66 [Assembly 
Serpenliiie, precious and common — Several localities. 
Pyroxene — In almost all its varieties. 
Hornblende, actynolite, tremolite — Several localities. 
Hypersthene — Abundant in various parts of the county, according to 
Dr. Emmons. 
Spinelle — Rare . 
Idocrase — Tv^^o localities. 
Garnet, common and manganesian. 
Colophonite — Town of Lewis. 
Seapolite. 
Feldspar, adularia and Labradorite — Abundant. 
Mica — Several localities. 
Chiltonite, a supposed new mineral, described by Dr. Emmons — 
Westporl. 
Sulphuret of iron — Cedar Point. 
Iron pyrites — Often associated with magnetic iron ore, &c. 
Arsenical pyrites — Town of Lewis. 
Sphene — Several localities. 
Yenite — Found in this county, according to Dr. Emmons. 
FRANKLIN COUNTY. 
This county, like the preceding, is at present chiefly celebrated for 
the abundance of its deposits of iron ore. Most of the varieties of this 
important substance are found here in large quantities, and of a good 
degree of purity ; as for example, the magnetic iron ore, specular iron 
ore and bog iron ore. The latter, however, is less extensively wrought 
than the others. At Westville, a bed of this ore has supplied a forge- 
fire for twenty-five years.* 
Deposits of calcareous tufa occur here in considerable abundance. 
At Chateaugay it is burned into lime of an excellent quality. Marble, 
of the white primitive kind, also abounds here, although it has not yet 
been turned to much account. 
Among the objects of interest in this county, are the springs situated 
about a mile and a half east of Chateaugay Corners. These are said 
to flow only for six months in the year, viz. from April to the latter 
* Hall, New-York Geological Reports, 1837, p. 139, 
