LIME AND CEMENT INDUSTRIES 82' 



A third, made by the writer, gave : 



Silica , .72 



Ferric oxid and alumina , 1.5 



lime 54.28 



Magnesia .8 



Carbon dioxid .. ., 44 



101.3 



The existence of an extensive clay deposit in the adjoining 

 meadows offers excellent facilities for the establishment of a Port- 

 land cement plant. 



A second quarry, operated by D. Nichols & Son, lies about 2 

 miles northeast of the preceding and is of similar purity. 



Black Trenton limestone is also mined just west of the state 

 line in Washington county. The quarry is situated along the 

 railroad track between "Whitehall and Fair Haven and is operated 

 by George D. Harris under the name of the Arana marble co. 



The rock is a dark colored, moderately hard limestone, with 

 very few visible impurities, and in places traversed with enormous 

 streaks of calcite, and at certain portions of the quarry, noticeably 

 at the western end, the quarry assumes a brownish red color. 

 As a whole, it may be said that the stone is very pure, and 

 where shale impurities occur they are generally in the shape of 

 horses which can be easily separated in the mining of the stone. 

 The following analysis indicates very well the high degree of 

 purity of this material. 



Silica .7 



Alumina 1 



Ferric oxid . . .7 



Lime 53.9 



Magnesia 1.4 



Carbon dioxid 42 . 5 



100.2 



