TELLURIUM IN NEW SOUTH WALES ORES. 117 



Tn an article which appeared in the Sijdiipy Daily Telegraph, 

 May 17tli 1888, tlie following description of the locality is 

 given : — 



About thirty-five miles to the south-east of Queanbeyan stands a moun- 

 tainous region called tiio Jiiigeras. 



The main road from Braidwood to Cooma runs through this region, and it 

 borders on Captain's Flat, the new mining centre, where are situated the 

 Vanderbilt, Commodore, Kohinore, and Jaye Gold Mines. 



In the heart of the Jingeras a prospecting party, headed by Mr. 

 Harkness, recently made a rich mineral discovery at a place called Norongo, 

 about eight miles south of Captain's Flat. 



The Tellurium minerals three in number occur in a gossan lode 

 about sixteen feet wide through which runs the vein containing 

 the Tellurium compounds, being six inches in width, and occurring 

 at a depth of about two feet from the surface. 



Two bulk assays were made of average samples for the 

 estimation of the bismuth, tellurium, etc., with the following 

 results : — 



No. 1. — Telluri-bismuthic ochre with tetradymite and mor 

 Metallic bismuth ... 1 6-90 per cent. 

 Tellurium ... ... 7'04 ,, 



Fine Silver at the rate of 2 oz. 3 dwts. 13 grs. p 

 ,, Gold ,, ,, 3 dwts. 6 grs. 



No. 2. — Same as former but containing more tetrad 

 Metallic Bismuth ... 27*88 percent. 

 Tellurium 1042 „ 



No Gold or Silver present. 



After my researches had proceeded thus far, I applied for 

 additional material with the view of ascertaining the relative 

 proportions, and the identification of the respective minerals, and 

 through the kindness of Mr. Price, of 114 King-street, Sydney, I 

 was supplied with specimens shewing the minerals freely, as also 

 with samples of the gossan in which the mineral vein occurs. 



The following description of the physical character of the 

 telluric-bismuth ores is by Mr. T. W. E. David, B.A., F.G.S. 



" The specimens of telluric-bismuth ores, forwarded for exami- 

 nation, from Norongo, near Captain's Flat, consist of lumps of 

 irregular shape from an inch to nine inches in diameter. 



They are associated with an earthy somewhat cellular gossan 

 of a reddish brown colour, and consisting of red and brown 

 ferruginous earth, traversed by numerous thin veins of limonite, 

 the secondary origin of which is evident from its stalactitic 

 structure in places, and from the fact that it forms the lining of 

 old cavities. 



Small scales of a pale bronze grey micaceous mineral are plen- 

 tifully distributed through tlie ochreous earth. They are mucli 

 decomposed, and upon slight pressure fall into an ochreous 



