notes on some minerals. 79 



Alluvial Gold with Metallic Copper 

 Is found at the source of Wet Creek, near Mount Misery, 

 bundle. An assay of 100 grains of the sample gave — 



Gold 23.0 



Copper ... ... ... ... 61.0 



Iron Oxides 10.0 



Loss ... ... ... ... 6.0 



Tooo 



The iron oxides occur as magnetic and titaniferous iron. 

 Professor Liversidge, who examined a sample forwarded by me in 

 1882, says, "The particles of metallic copper are much smaller 

 than those of the gold, the latter, however, do not exceed a square 

 millimetre in area. The gold is not much water-worn, and under 

 the microscope is seen to be distinctly crystallized in parts. The 

 grains of copper, although of more or less spherical form and with 

 mammillated surfaces, are in some instances distinctly crystallized." 

 Slates, jasperoid rocks, and serpentines occur in the vicinity, and 

 are overlaid in part by basalt. No work has been done in this 

 locality since it was first prospected in 1882, as the gold was 

 found not to exist in payable quantities. 



Gold with Sulphide of Antimony and Arsenic. 



Gold associated with stibnite and arsenic, or some arsenical 

 compound, occurs in a large quartz- vein in the " Ellenora Gold 

 Mining Company's" property at Hillgrove, about fifteen miles in an 

 easterly direction from Armidale (N.E.*). Although when observed 

 casually the particles of gold often appear to be attached to the 

 stibnite, yet so far as my observation has gone, in no instance is 

 this the case, close examination reveals the fact that each and 

 every particle of gold although almost inclosed by the stibnite, is 

 seated upon a larger or smaller particle of quartz. The arsenic 

 is not observable in the stone or ore until heated in the kiln, 

 when large quantities of the oxide condense in brilliant octahedral 

 crystals in the cooler parts. 



Gold in Mispickel. 



At Bowling Alley Point, near Nundle, some fine specimens 

 have been obtained from the " Carrington Reef.'' The gold 

 bright and clean, and penetrating the mispickel in wiry forms in 

 every direction. 



Gold in Calcite. 



At Tea-tree Creek, about twelve miles S.E. from Barraba, in 

 thin branching filiform masses. The calcite is white and opaque, 

 and cleaves readily into rhombic fragments. Some specimens of 

 pure white calcite, with the gold projecting from the cleavage 



* N.E. is a contraction for the New England District. 



