9 
240 Localities of Minerals. 
thin, but considerably numerous; the coal is very glossy and 
black; breaks with a smooth and almost conchoidal fracture, 
and very much resembles jet. It is very much intersected by 
thin veins—(not thicker than a knife-blade)—of white crystal- 
lized calcareous spar. This coal is bituminous, and burr 
pretty freely. It has not been explored, except superficially. 
Coal, in Southington, Connecticut. Beds of slate are found 
more or less bituminous; and, at the bottom of some of the 
wells, the slate begins to exhibit thin veins of coal, distributed 
in great numbers through the substance of the slate, which is 
the shale of the miners. The coal is from the thickness of @ 
knife-blade to that of a finger; it is highly bituminous, and 
burns with great freedom. Even the entire masses of the stone 
burn brilliantly, when ignited on a common fire ; and, after ex- 
haustion of the coaly matter, leave the slate of a grayish color. 
The locality from which the specimens were taken, is 
the land of Roswell Moore, Esq. about midway between Hart- 
ford and New-Haven. The spot was lately examined by Col. 
Gibbs, Eli Whitney, Esq. Professor Olmsted, and others; and 
arrangements are making to bore the strata, to the depth of 
several hundred feet, if necessary. These localites are in 
what may, with propriety, be called the coal formation of 
Connecticut. Coal has been found in several other places in 
that state; and the peculiar geological features of the region 
in which it is contained, are very interesting, and may hereafter 
be described in form. . 
Sulphate of Barytes, with coal, &c. Sulphate of barytes 
ists abundantly in Southington, on what is called the Clark 
copper pyrites, &c. The sulphate of barytes is more °F less 
crystallized, and principally in the form that is called co* 
comb spar. same vein, although it is the side of @ 
mountain, several hundred feet above the flat country adje- 
cent, and two or three miles from the coal strata above mot 
tioned, contains numerous spots and patches of coal, very muc 
resembling that at Suffield. It is of a most brilliant black, and 
