A PECULIAR CLEAVAGE STRUCTURE 



563 



I :1~T^''\ 1 .»i;a„ 1 '1 1 -'I ~" 



Fig. 6. — Elongated or lens-shaped masses of quartz, occurring in talc schist. 

 Photograph of specimens collected by Mr. Arthur Keith, U.S. Geological Survey, near 

 Canton, Georgia. 



