206 



DESCRIPTIVE MINERALOGY. 



Fig. 33. 



Fig. 34. 



Fig. 35. 



Fig. 33, unibinuire of Haiiy. 



Fig. 34. A modification of the amhlife.rc of Haiiy. 

 M on 2 154° 26' 52" ; c on s 110° 25' 58" ; o on i 

 135° 39' 58". 



Fig. 35, sousquadruple of Haiiy. M on k 129'^ 

 13' 54" ; k on o 142° 8' 47" ; P on / 157° 56' 59": 

 (ZonZ 163° 2' 22". 



Jefferson County. At Pillar point, on 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 

 iibrous 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. Vanuxem, and which will be described in its 

 proper place. 



Rockland County. Minute tabular crystals, having the primary form, are found associated 

 witii calcareous spar at Tompkins' quarry in the town of Haverstraw. 



