Plate I 6 



A. Microperthitic intergrowths of orthoc'ase (O) in 

 plagioclase (Fs). Quartz is labeled (Q). Crossed nicols, 

 actual field 0.08 inch or 2.0 mm. 



B. Garnet and quartz in the reaction rims. Q is 

 quartz ; G is garnet. White light, actual field 0.05 inch 

 or 1.3 mm. 



