Marshall. — Geological Notes 567 



The expedition to this region was made with the object of 

 making observations on the nickel-iron alloy awaruite ; but so 

 far as that object was concerned it was without result. No 

 awaruite was found, and no nickel could be found in the rock 

 when chemical tests were made. It appears, therefore, that 

 awaruite does not occur in the periclotite rocks of the south end 

 of this extensive magnesian region. 



The relationship of this area to the magnesian rocks of Mil- 

 ford Sound, described by me last year, is not a very close one, 

 though of course the two olivine rocks belong to the same group 

 and occur in the same penological province. The dunite of 

 Milford Sound contains much darker chrome-ore, and is almost 

 destitute of diopside. The hartzbergite of Milford Sound con- 

 tains a chrome-bearing magnetite, but no picotite or chromite 

 or diopside. In the present periclotite the picotite is pale- 

 coloured, diopside is abundant, and enstatite less frequent. 



