GEOLOGY OF THE COOMA DISTRICT, N.S.W. 209 
extracted from the water in some of the old shafts by the 
simple method of throwing in scrap-iron, which is in time 
replaced by metallic copper. Galena is said to have been 
found on the hill. 
Bushy Hill, which is really a long ridge, is composed 
mainly of a mylonized quartz-porphyry which forms the 
country rock, and the minerals occur mostly disseminated 
through it. The porphyry contains numerous ‘“‘eyes”’ of 
quartz, while less frequently felspar occurs as phenocrysts. 
Slates also form part of the country rock. The cleavage 
planes of quartz-porphyry and slates are vertical. On the 
Cooma side there is quartz-porphyry which appears to be 
of a later date than the other: it is free from crushing, 
has smaller phenocrysts, and has a siliceous-looking base, 
resembling to some extent the silicified porphyry at Toll- 
Bar Bridge. North of Bushy Hill a long sinuous outcrop 
of quartzite, running in general N. 20° EH. extends to near 
the Numeralla Road. 
Between Bushy Hill and Middle Flat is a long reef, 
forming a conspicuous ridge about half a mile long, and 
composed of what appears to be a kind of quartzite, 
seamed with quartz veins. This reef has been found to be 
barren. 
Tripolite.—Reference has already been made to the 
deposit near Bunyan. This is being worked by a company 
which employs one man in digging the tripolite, drying and 
bagging it, and despatching it to Melbourne, for what 
ultimate purpose I have been unable to ascertain. 
Lime.—At Toll Bar Bridge there isa kiln where the 
limestone is being burnt on a small scale. There is appar- 
ently only a local sale for the lime, but there seems no 
adequate reason whya bigger industry should not be built up. 
Barytes.—Abont 200 yards east of the N.E. corner of 
Portion 300, Parish of Cooma, and just outside the eastern 
N—July 1, 1914. 
