Fig. 14 Potsdam outlier in the Mohawk valley ; sample from one of the 

 better beds. Taken with nicols crossed ; magnification 65 diameters. Similar 

 in grain size, and lithologic character to the white friable sandstones in 

 the Moira-Bangor area on the northern edge of the Adirondacks ; the 

 rounded original grains are enlarged by secondary growths of quartz in 

 optical orientation, but interlocking is not a prominent feature, the rock 

 being quite friable where exposed to the weather. 



