206 
DESCRIPTIVE MINERALOGY. 
Fig. 33. 
Fig. 34. 
Fig. 33, unibinaire of Haiiy. 
Fig. 34. A modification of the amblifere of Haiiy. 
M on z 154° 26' 52" ; z on z 110° 25' 58" ; oon: 
135° 39' 58". 
Fig. 35, sousquadruple of Haiiy. M on k 129° 
13' 54" ; li on o 142° 8' 47" ; P on l 157° 56' 59"; 
d on l 163° 2" 22". 
i the shore of Lake Ontario, a few miles northeast 
of Sacket’s-Harbor, heavy spar forms large veins, and may be taken out in blocks two or 
three feet in length and a foot or more in width. It is nearly compact, variously coloured, 
and susceptible of a high degree of polish. 
According to Dr. Emmons, coralloidal heavy spar is found associated with calcareous spar 
at Oxbow in this county. 
Monroe County. In the limestone near Rochester, there have been found nodules either 
fibrous or lamellar, and of a reddish colour. The same variety occurs crystallized, in Wayne 
county; but it has not been thus obtained at this locality. It has sometimes been mistaken 
for sulphate of strontia. 
Madison County. Mr. Eaton states that this mineral occurs about a mile from the great 
water limestone quarry. 
Montgomery County. The lamellar variety, similar to that of Little-Falls and Fairfield, 
has been found in loose masses in several parts of this county. It probably belongs to the 
calciferous sandrock. 
Onondaga County. About three quarters of a mile east of the Railroad depot at Syracuse, 
heavy spar occurs in plates or tables interlacing each other, in the limestone. Celestine is 
also found at the same locality, and both of these minerals are in the immediate vicinity of 
the dyke of serpentine, first noticed by Mr. Yanuxem, and which will be described in its 
proper place. 
Rockland County. Minute tabular crystals, having the primary form, are found associated 
with calcareous spar at Tompkins’ quarry in the town of Haverstraw. 
Jefferson County. At Pillar point, 
