QUARRY MATERIALS OF NEW YORK 79 



The bureau of research, State Department of Highways, in its 

 report for 1910 includes two tests of the Alexandria Bay granite, 

 as follows: 



No. 1 No. 2 



Specific gravity 2.64 2.64 



Weight, pounds a cubic foot 165 165 



Absorption, pounds a cubic foot .17 .11 



Abrasion, French coefficient 20. 17.4 



Hardness 18.5 18.5 



Toughness 8. 10. 



A chemical analysis of the Alexandria granite, which is given in 

 the Geology of the Thousand Islands Region, may be safely used in 

 reference to the product of this quarry. The locality of the sample 

 is given as one-fourth of a mile south of Alexandria Bay, thus in 

 close vicinity to the quarry. The analyst is E. W. Morley. 



Si0 2 73-10 



AI2O3 14.29 



Fe 2 3 1 .04 



FeO 1 . 04 



MgO 53 



CaO 1. 18 



Na 2 3.08 



K 2 5.36 



H 2 61 



Ti0 2 18 



P 2 5 03 



CI 03 



F 02 



S 02 



MnO 07 



100.58 



GRANITIC ROCKS IN THE WESTERN ADIRONDACKS 



The western section of the Adirondack region, within the 

 boundaries of St Lawrence and Lewis counties, is a complex of 

 gneisses, schists, crystalline limestones and igneous intrusions, 

 affording a considerable variety of quarry materials that are but 

 little utilized. The only quarry developments of any importance in 

 fact are based on the crystalline limestones which occur in belts, 

 principally on the outer edge of the area. From these limestones 

 are obtained excellent grades of building and monumental marble, 

 of which the Gouverneur marble is the best example, as well as 

 material for lime, furnace flux and road construction. The silicate 

 rocks have received meager attention from an economic standpoint, 



