P.L.S.N.S.W. 1908. 





».,***< • 



Fig. l. 



URALITISATION OF THE /EGIRINE. 



* %^m 







: v 1 





^v / 



\ ' X 







) • <1 •- .w- 











CT ■ 



* \ a* 6 • 





_ • jf "n^^H 



™™ '•"*-» "S^*™** 





^^^^^T 



fl\..' ^ 



Fi 



- "* 



ARFVEDSONITE 



IN CHALCEDONY 



fe 



,-c; 



>3ff ^* 



i A 



l-'ig. 8. 



ADVANCED DECOMPOSITION OF ARFVEDSONITE, 



Fig. 4. 



EARLY STAGES IN DECOMPOSITION OF ARFVEDSONITE. 



