BY W. F. PETTERD, C.M.Z.S. 87 



gold and fahl-ore is somewhat rare and unusual. The 

 assay was as follows: — 



Cu = 7*97 per cent. 



Ag =: 24*22 ozs. per ton 

 Au = 6*78 ozs. per ton 



An assay of another piece, taken from the same spot, is as 

 follows : — 



Cu = 8'4 per cent. 



Ag = 24*0 ozs. per ton 



Au = 6 '8 ozs. per ton 



The locality is the footwall of the Mt. Lyell ore-body, 

 in No. 7 level, which is 500 feet below the surface of the 

 outcrop of the ore-body." 



In addition to the common occurrence of gold with 

 quartz, pyrite, and arsenopyrite, it has also been found in 

 Tasmania in association with the following minerals, 

 viz. : — 



Batchelorite. — Mt. Lyell. 



Bornite. — Mt. Lyell. 



Bismutite. — Middlesex. 



Cassiterit'e. — Branxholm. 



Chalcopyrite. — Mt. Lyell ; Rosebery Mine, North-east 

 Dundas; Mt. Read district. 



Chromite (as minute crystals). — Castray River. 



Cupriferous Pyrite. — Mt. Ramsay; Mt. Lyell ; Rosebery,. 

 North-East Dundas ; Hercules, and other mines at Mt. 

 Read; Rio Tinto, Savage River; Scamander River. 



Galenite. — Zeehan ; Mathinna; Devon Mine, Middlesex. 



Hematite (Micaceous). — Black Bluff, Middlesex; Mt. 

 Lyell. 



Huascolite. — Hercules Mine, Mt. Read. 



Limonite. — Mt. Read; Mt. Lyell; North-East Dundas. 



Native Copper. — Mt. Lyell. 



Osmiridium.- -Vieman River district; Blue Tier, near 

 Beaconsfield ; Castray River. 



Fyrrhotite. — Beaconsfield. 



Rutile. — Lymington, Port Cygnet. 



Sandstone. — Glenn Prospecting Association, Middlesex. 



Siderite. — Specimen Reef, Savage River. 



Sphalerite. — Mt. Read; North-East Dundas. 



Stan/lite. — Silver Queen Mine, Zeehan. 

 Titaniferoiis Iron Sand flserine J.— 'Pieina,n district; 

 Lisle Goldfield ; and other places. 



