<,'ro(;ri, .^lomero-porpliyritic, tlie separate pioces close tou-erlic 

 ii (Ma<-ke(l crystal, but indepeiKlently oriented, probablv 

 growths of diderent crystals. Th(> olivine is abundant, t-oloi 



S.G.' 2 •91. Sec-tioi 

 :, made up of felsp; 



Ml dull fracture, shew- 

 alt.'red feKl'vus. aiid, 





TACHYLYTB GROUP. 



