Fig 9 Shawangunk from Ellenville; photomicrograph taken with nicols 

 crossed, magnification 65 diameters. Outlines of original founded grains 

 still remain; the grain size averages 0.25 mm in diameter, as contrasted 

 with the rock from Accord (figure 8) ; patches and shreds of sericite are 

 visible, but the rock is composed chiefly of quartz, with added secondary 

 growth in parallel orientation, fairly well interlocked. 



