LavEnsIDGE.— On some of the N. Z. Minerals in the Otago Museum. — 501 
MzeTAnLIFEROUS Mixerats. 
Platinum.*— Southland. 
In the form of small flattened grains. 
On account of the smallness of the speeimen, 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 85 to 42 per cent. of platinum (black 
or magnetie oxide of iron not estimated), and an ally of platinum, 
osmium, and iridium."— Vide Geology of Otago, p. 149. 
Auriferous Quartz.—Taieri Goldfield. 
From the prospectors’ reef in a gully leading into Frazer's Gully. 
Thickness of reef, 8 feet. 
Contains visible gold. 
Auriferous Quartz.—Adelaide Reef, Taieri. 
Vein-quartz, stained with iron oxide. But a small quantity of visible 
gold present. 
Auriferous Quartz.—Adelaide Reef, Taieri. 
White vein-quartz. 
Auriferous Quartz.—Blacksmith’s Gully. 
Vein-quartz, containing visible gold; from surface. 
Auriferous Quartz.—Sorensin’s Old Reef, Skippers. 
Of a bluish colour, rich in visible gold. 
Auriferous Quartz.—Nevis River. 
Four specimens of more or less crystallized quartz. 
Auriferous Quartz.—Serpentine River. 
Contains a small quantity of visible gold. 
Auriferous Quartz.—Pleasant River. 
Contains visible gold, especially near the taleose vein. 
Auriferous Quartz.—Adelaide Reef. 
Two specimens, containing but a small quantity of visible gold. 
Auriferous Quartz.—Hendon Reef. 
Brownish-coloured hornstone-like 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 chloritie base. 
Presented by Mr. Nichol. 
: * 4th Lab. Rep., 1869, No. 486. 
