ht i? 
368 E. F. PITTMAN. 
and has more the appearance of a true fissure lode. It has an 
east and west course, and the working shaft is situated about 
three-quarters of a mile in an east-south-east direction from that 
part of the main Broken Hill Lode known as the British Mine. 
The width of the Consols Lode varies from a few inches up to ten 
feet and it dips to the south at an angle varying from 24° near 
the surface to 60° at a depth of five hundred and fifty feet. The 
lode traverses gneisses and schists and an intrusive (1) basie rock, 
which has been examined by Mr. J. B. Jaquet, Geological Sur- 
veyor, and found to consist essentially of hornblende, triclinic 
felspar and bronzite. According to Mr. George Smith, the lode 
is productive only where it intersects this hornblende rock. The 
gangue or veinstuff consists chiefly of limonite down to a depth of 
one hundred and thirty feet, which appears to be about the limit 
of the zone of oxidation, below that depth the gangue consists of 
chalybite and calcite. 
Mr. George Smith, who is an enthusiastic mineralogist, has 
dentified a considerable number of rare minerals occurring in this 
mine, and I am indebted to him for the following notes upon their 
occurrence, and also for specimens illustrating a number of the 
minerals :— 
Norrs sy GEORGE SMITH, M.A.1.M.E., Sub-Manager, 
Upon the minerals occurring in the Australian Broken Hill 
Consols Mine. 
Dyscrasite or antimonial silver has been found in slugs or masses 
at all depths. Photographs are exhibited of two of these masses 
known respectively as the Turtle and the Flitch of Bacon. The 
former weighed sixteen hundredweight, and contained eighty 
per cent. of pure silver. The latter weighed eighty-seven pounds 
and contained eighty-three per cent. of silver. A piece still larger 
than the Turtle was found weighing twenty-three hundredweight, 
but was not photographed. The proportions of silver and antimony 
have been found to vary considerably in different specimens of 
dyscrasite from the mine. The formule of the most common 
varieties were found to be Ag;Sb, Ag,Sb, Ag,Sb, Ag, .Sb. 
