166 THE MINERALS OF NEW SOUTH WALES. 



I have been unable to find any analysis of New South Wales 

 native copper, but it probably contains the usual small quantities 

 of silver, lead, bismuth, and other metals. 



In nearly all cases it is found in association with cuprite, 

 malachite, and other oxidized copper ores, as at Carcoar, the 

 Canobolas, Wellington, Mitchell's Creek, Bathurst, Pink's Creek, 

 Bell River, Peel River, Manilla, Bingera, Cobar. It occurs in 

 smaragdite on Molong Creek, at Peelwood with lead ores. The 

 late Mr. Stutchbury reports that at Kelloshiels the well-water was 

 found to be so impregnated with copper as to be unfit for domestic 

 purposes. 



Cuprite. 



Chem. comp. : Copper suboxide = Cu^O. Copper, 88*8 oxygen, 

 11-2 = 100. 



Usually found massive, but occasionally well crystallized, in 

 cubes and octohedra, which, however, are seldom more than £ 

 inch in diameter. 



Chalcotrichite, or Plush Copper : The variety crystallized in capil- 

 lary crystals, met with at the Coombing Mine near Carcoar. The 

 best crystals which I have seen have come from the Cobar Mine. 



This mineral is usually associated with the other oxidized copper 

 ores, such as malachite and chessylite. 



It is abundant at Cobar, both massive and crystallized ; Clarence 

 River, Cowra, Bathurst district, Mitchell's Creek, Wiseman's 

 Creek, Carcoar, Icely, Burrowa, Molong ; Manilla, with grey sul- 

 phide or redruthite; Bungonia, Yass; Peehvood, with tenorite; 

 Bingera. 



Tenorite. — Melaconite. 



Or Black Oxide. — Chem. comp. : Copper oxide = CuO. Copper, 

 79-85; oxygen, 20-15 = 100. 



Usually in the form of a black powder, massive, or sporadic, i.e., 

 disseminated in nests. Usually found associated with other 

 oxidized copper ores, as at Carcoar, Wellington, Icely, Peelwood, 

 Burrowa. 



Malachite. 



Green Carbonate of Copper. — Chem. composition : Hydrous 

 Copper Carbonate = Cu 2 C0 3 + H 2 0. CuO, 71 -9; carbonic acid, 

 19-9 ; water, 8-2 = 100. Metallic copper, 57-5. 



Oblique system. Colour from pale emerald to deep green. Occurs 

 massive, also mammillated and botryoidal with fibrous concentric 

 structure, the various layers often possessing different shades of 

 colour and forming a most beautiful and valuable stone for orna- 

 mental and inlaying purposes. Crystals are occasionally met with, 

 and sometimes of large size ; those from the Cobar Mines are par- 

 ticularly beautiful. The silky lustre is often very remarkable, the 

 capillary crystals sometimes being several inches long. 



