364 notes on some new south wales minerals. 



Gold and Native Antimony. 



From the same mine, the New Reform Lucknow, specimens are 

 shown of gold in calcite as the vein stuff and in association with 

 native antimony, mispickel, zinc blende, pyrites, and silver-bearing 

 galena. 



The vein apparently runs through diorite and serpentine — some 

 of the serpentine is of the foliated varieties known as marmolite, 

 and in places a little asbestos is present, especially at the deeper 

 levels. The native antimony is present in places in considerable 

 quantity, and came in at about 350 feet. 



Marmolite. 



This foliated variety of serpentine occurs with massive serpentine 

 on Jones' Creek, Gundagai. 



Molybdenite — Molybdenum sulphide = MoS 2 . 



Found with cobaltine and erythrite at Carcoar in fairly well 

 developed platy crystals. 



Platinum, Osmium, and Iridium. 



The small specimen of platinum associated with gold was found 

 on the head waters of the Bogan and Lachlan rivers, N.E. of 

 Condobolin. 



I am informed by Mr. Harding of Grafton, that gold, platinum, 

 and osmi-iridium occur in the sea sands at Jamba, Clarence Heads, 

 and generally in the north ends of the bays and reaches along the 

 New South Wales coast. The " platinum " consists principally 

 of osmium and iridium and contains only about 30% of platinum, 

 hence it is only worth a few shillings an ounce. 



Prehnite. 



This zeolite has been found in the basalt at the Prospect reservoir. 

 Some imperfect and small crystals were also sent to me by Mr. D. A. 

 Porter for identification, who had obtained them from serpentine 

 in New England in 1887. 



The sp. grs. of two specimens from New England were 2*89 and 

 2-90. 



Siderite = FeCO 3 . 



Some fairly good crystals of this mineral have been found at 

 the Cobar Copper Mines. 



Pyrrhotine — Magnetic pyrites. 



The Revd. J. Milne Curran reports the presence of this mineral 

 at Cobar in the massive condition. 



