M ECONOMICAL MINERALOGY. 



On the farm of Mr. H. W. Golt, two miles west of Austerlitz, where it occurs in a marsh, 

 and is deposited like bog iron ore. It is thought to be an extensive bed. 



On the farm of Mr. Judson Park, a mile south of the above, there is said to be another bed 

 of the same mineral. 



Several similar localities are reported to exist in the northeastern part of the towm of Aus- 

 terlitz. 



Also on the farm of Mr. David Parsons, three quarters of a mile south of Canaan Centre ; 

 and on the farm of Mr. Joseph Goodsell, in the town of Hillsdale, &c. 



Mr. Mather states, that in the counties of Columbia and Dutchess, 50,000 tons of wad could 

 be procured without any great expense. If carefully prepared, it would be worth $20 a ton, 

 or for the whole amount $1,000,000. 



In Cattaraugus County, the black oxide of manganese has been found in small grains in 

 various parts of the Conewango and Little valleys ; but the quantity is too small to give it 

 amy value, The same js also true in regard to the occurrence of the hydrate of manganese in 

 the County of Allegany ; the lamellar variety of which, according to Mr. Vanuxem, is found 

 associated with calc tufa near Angelica. 



Essex County. On the sands near the village of Keeseville, there occur small rounded 

 masses of a reddish brown colour externally, which, upon analysis, are found to contain a 

 considerable proportion of oxide of manganese. 



Lewis County. Oi) the summit of Tug hill, about two miles from the village of House- 

 ville, there is a bed of the earthy oxide of manganese in a marsh. It varies in depth, as at 

 present exposed, from three to eight inches, being made up of rounded masses of various sizes. 

 It is somewhat doijbtful whether this is an extensive bed, and I am not aware that any means 

 have been taken to determine the point. 



New-York County. This mineral has long been knovra upon the Island of New- York, 

 where it occurs in hollow friable masses in alluvial hills. The quantity, however, is small. 



Orange County. Four miles southeast of Warwick, there is a compact variety of the 

 oxide of manganese, which, however, is largely mixed with oxide of iron and earthy matters. 



Westchester County. In the dolomite near Sing-Sing, there are occasionally found 

 nodules of compact black oxide of manganese. They possess a higher specific gravity than 

 most of the specimens of wad already described, and have a minute portion of copper com- 

 bined with the manganese. They may belong to the variety noticed by Cleaveland under the 

 name of Cupreous Oxide of Manganese. 



These, with the addition of the small masses occasionally met with in the slates of Albany 

 and Rensselaer Counties, constitute the New- York localities of this mineral. It is usually 

 quite largely mixed with the oxide of iron and other foreign matters, which would of course 

 detract from its value as an article of commerce. The following table will exhibit the results 

 of the several analyses which I have made of this substance from diiferent localities. 



