BY W. F. PETTERD. V7 
at Nolan’s Creek, near the Pieman River; at Laurel Creek, a 
tributary of the Blyth River, it occurs in Chlorite, with Blende, 
Galena, and Copper Sulphate ; Dunyan Range; Badger Plain ; 
near Circular Head; it is stated to also occur at Mainwaring 
Inlet, south of Macquarie Harbour. 
Regarding the form that has been discovered at Mount Bischoff, 
this interesting and peculiar copper foil has been found under similar 
conditions in the elvan courses of Cornwali, England. Mr. A. 
K. Barnett states, in a paper entitled “‘ Observations on the Elvan 
Courses, Greenstones, and Sandstones of Cornwall, with Remarks 
on their associated minerals” (Royal Cornwall Polytechnic 
Society, 1873), that “At Wheal Buller the joints of the elvan 
contain thin plates of Native Copper. Large quantities of Native 
Copper occurring in arborescent and filmy forms were found filling 
the joints of the elvan at the Consolidated Mines. It also 
occurs in the joints of the killas and the quartz veins associated 
with the elvan.” 
56. CROMFORDITE (Chlorocarbonate of Lead). 
A single example obtained; the crystals are rectangular four- 
sided prisms, with the terminal edges replaced. Itisvery frangible, 
colourless, and white, with an adamantine lustre. It occurred as 
a small group attached to Galena with some associated Cerussite. 
Adelaide Proprietary Mine, Dandas. 
57, COVELLITE (Blue Copper Sulphide). 
Obtained as an incrustation investing cupriferous Pyrites and as 
a bluish-black powdery deposit, filling cavities in a stanniferous 
lode. 
Star of Peace Mine, Cascade; Ethel Mine, Blue Tier 
(Montgomery). 
58. CUPRITE (Red Oxide of Copper). 
In the vicinity of Mount Lyell this mineral occurs in some 
abundance in finely formed crystals which are, both as regards 
size and colouration, of the characteristic octahedron and its 
modifications. They are often attached or partially embedded in 
blocks of nodular Limonite; occasionally the cavities in the 
nodules are literally coated with the bright sparkling mineral, 
which, from its ruby colour, contrasts well with the brown iron 
oxide; the latter is often stained a shining black with Manganese 
Oxide and Stilphnosiderite. 
59. CORUNDUM (Owide of Aluminium). 
The ordinary dull brown coloured form of this mineral is 
occasionally met with in the stanniferous drift of the north-east 
coast, but it gradually merges into its variety Sapphire, which is 
far more abundant than the typical form, although good clear 
