Vol. 69.] PETKOLOGT OP THE KALGOORXIE GOLDFIELD. 62"/ 



THE RoCKS OP KaLGOOELIE. 





Gibson, 1911. 



Simpson, 1902. 



Earlier determinations- 





Ancient sediments. 



Older sediments. 



Conglomerates 

 (Chewings). 





Fine - grained amplii- 

 bolites (older green- 

 stones). 



Amphibolites and 

 > their derivatives 

 (in part). 











Calc-scliists. 





Peridotites. 



Serpentines. 



Talc-schist (Maitland). 





Basic amphibolites. 



Amphibolites and 

 - their derivatives 

 (in part). 



Pyroxenite (Kemp). 





1 



( Felspathic and acid 

 amphibolites. 



f Amphibolites (Goczel, 

 < Card, Schmeisser, 

 I L Campbell). 





J Quartz-diorite (Watts). 





r- Quartz-diabase. 



i 

 J 



1 f Acid eruptives (Card). 

 1 | Basic eruptives 

 1 J (Rickard). 

 1 | Diabase (Hoover). 

 1 I Quartz-andesite 

 I (Judd). 





Porphyrites. 



Porphyrites. 



Porphyrites (Campbell). 





Felspar-porphyries. 



Felspar-porphyries. 



Soda-felsite (Maitland). 

 Felspar-porphyry (Card). 

 Felsite (Campbell). 



on the scale of 10 chains to an inch (8 inches to a mile). The 

 classification on which the map was based was as follows : — 

 Recent superficial deposits. 

 Dry blown patches. 

 Laterite (ironstone conglomerate). 

 Slates and schists. 

 Quartzites and graphitic slates. 

 Felsite (?). 

 Amphibolite, massive (with hornblende). 



Do. do. (with chlorite). 



Do. do. (with actinolite). 



Do. foliated. 



Porphyrite. 



Mica-schisfc [transmuted porphyrite (?)]. 

 Peridotite. 



