Mineralogy of Jefferson and St. Lawrence Counties, JV.Y. 347 



It occurs in a large vein in the metalliferous lime rock, extended 

 directly back from the shore of the Lake, which has been exposed at 

 various points, for about thiity rods. The mineral may be taken out 

 in blocks, two to three feet in length, and a foot or more in width. 



It is compactly fibrous, and banded, but never crystallized. The 

 colors vary from pearl-wljiie to flesh-red, and are arranged most com- 

 monly in stripes or rings. It takes a high polish ; the polished speci- 

 mens in thin slabs are translucent, and in some specimens semi-trans- 

 parent. This mineral might be advarltageously used for ornamental 

 purposes. It may be obtained at the locality in any desirable quanti- 

 ty ; it may be sawed and polished with great ease, and the polished 

 specimens are very beautiful. 



Some years ago, a cave of considerable extent was discovered near 

 the village of Watertown. This cave furnished stalactites in great 

 abundance, but all the interesting specimens have long since been 

 carried away by mineralogists and other persons who have visited it. 

 Very fine specimens of ^o-fi?-/c mineral, in large masses, may yet 

 be obtained at this locality. 



From Watertown proceeding in a North easterly direction eight 

 or ten miles, we see the lime rock cropping out, and we come upon 

 the Calciferous Sand Rock which passes under the Lime Rock and 

 extends north and East until it meets with the primitive formation. 

 The Calciferous Sand Rock, so far as we know, does not furnish any 

 interesting minerals. 



At Theresa on the Indian river, eighteen miles from Watertown 

 we found Crystallized Milk Quartz. It occurs in a large vein in 

 Gneiss. It is perfectly white, and contains crystals more or less perfect 

 running through it in all directions. The Crystals which are six sided 

 prisms, entirely opaque, varying from two to seven inches in length, 

 and from one half to two inches in diameter, sometimes are terminated 

 by six sided pyramids at one or both extremities. Good specimens 

 may still be obtained by blasting the rock. At Theresa we also find 

 Steatite in considerable quantities, imbedded in granular lime rock. 

 Brucite'? is found in grains disseminated through the same rock. 



In the town of Antwerp, Jefferson Co., twenty fourmiles from 

 Watertown, we found, by the road side, a large boulder of granular 

 lime rock, which contains tremoUte in fine crystals ; also crystals of 

 white augite. 



At Oxbow, on the Oswegatchie river, we find green crystals of 

 Hornblende, variety Pargasite. The same mineral is found more 



