81 



Selwyn names (for cryatallised Talc) near Menge Town, Mount 

 Crawford. A bronze-coloured Talc occurs on Yorke Peninsula, 

 and white Talc at the Barossa Hange and Kanmantoo. Burr 

 mentions the following additional localities : — Belvidere Eange, 

 Eiver Hutt and Lyndoch Valley. 



Glaitconite. 

 Professor Tate has noted the occurrence of this mineral in 

 the limestone rocks of the Aldinga cliffs, and the Bunda cliffs 

 of the G-reat Australian Bight. 



Kaoltjtite. 



All varieties of this mineral are to be found in this colony, 

 while ordinary clays consisting of Kaolinite more or less inti- 

 mately mixed with impurities are abundant. The following are 

 a few of the many localities for the pure white Kaolin : — 

 Wallaroo mining district, Tanunda, Ardrossan, near Charlotte 

 "Waters, Hammocks Eange and Teatree GruUy. 



The following are the results of the analysis of two specimens 

 of pure white Kaolin dried at 100° C. — A being obtained from 

 near Point Eiley, Hundred of AVallaroo, and B from Teatree 

 GruUy, the former comprising an aggregation of pearly scales 

 easily seen under the microscope with a low power : — 



100-87 100-46 



In A, the alkalies, being chiefly soda, are calculated as such - 

 in B, they were principally potass and are so calculated. 



Tate reports its occurrence at Port Vincent, and of a hard 

 Kaolin clay eight miles west of Charlotte Waters ; while Burr 

 mentions white clay on the Gawler Plains at the source of the 

 Angus, Plaxman Valley and Eiver Gawler. 



PEIf FINITE. 



A specimen of the massive variety of this species has 

 reached me from near Beltaua, the colour being a fine apple- 

 green. A chemical examination proved the presence of chromium. 



