LiVEESiDGE. — On some of the N. Z. Minerals in the Otago Museum. 501 



Metallifeeous Minerals. 

 Platinum.'^' — Southland. 



In tlie form of small flattened grains. 



On account of the smallness of the sjpecimen, I did not think it advisable 

 to use any portion of it for chemical examination ; and, moreover, Professor 

 Black has published the results of his examination of a sample from the 

 Bluff, which is apparently very similar to this specimen. 



He states — " It consisted of from 35 to 42 per cent, of platinum (black 

 or magnetic oxide of u'on not estimated), and an alloy of platinum, 

 osmium, and iridium." — Tide Geology of Otago, p. 149. 



Auriferous Quartz. — Taieri Goldfield. 

 From the prospectors' reef in a gully leading into Frazer's Gully. 

 Thickness of reef, 3 feet. 

 Contains visible gold. 



Auriferous Quartz. — Adelaide Eeef, Taieri. 



Vein-quartz, stained with u-on oxide. But a small quantity of visible 



gold present. 



Auriferous Quartz. — Adelaide Keef, Taieri. 



White vein-quartz. 



Auriferous Quartz. — Blacksmith's GuUy. 

 Vein-quartz, containing visible gold ; from surface. 



Auriferous Quartz. — Sorensin's Old Eeef, Skippers. 

 Of a bluish colour, rich in visible gold. 



Auriferous Quartz. — Nevis Eiver. 

 Four specimens of more or less crystallized quartz. 



Auriferous Quartz. — Serpentine Eiver. 

 Contains a small quantity of visible gold. 



Auriferous Quartz, — Pleasant Eiver. 

 Contains visible gold, especially near the talcose vein. 



Auriferous Quartz. — Adelaide Eeef. 

 Two specimens, containing but a small quantity of visible gold. 



Auriferous Quartz. — Heudon Eeef. 

 Brownish-coloured hornstone-hke quartz, marked with grey streaks ; 

 contains visible gold. 



Auriferous Cement. — Tuapeka (from the Blue Spur.) 

 A mass of quartz, schistose, and other pebbles, mixed with much water- 

 worn shotty gold, cemented together by a chloritic base. 

 Presented by Mr. Nichol. 



* 4th Lab. Eep., 1869, No. 486. 



