72 
Mines and Mineral Statistics, 
I would here promiso tliat, in usin^ tlie 
above terms pleiatocene, pliocene, &c., T do so 
in a measure ])rovisioually, as expressing the 
relalive ages of the formations to winch tliey 
are applied ; for, in tlie absence of fossil 
evidence, as the llcv. Mr. Clarke has pointed 
out (in his Remarhs on the Sedhnentanf For- 
inaimns of S. WuUs)^ tlie exact age of some 
of the IN’. S. Wales tertiary deposits cannot be 
definitely ascertained. Nevertheless, as those 
I liavo examined in the Inverell District cor- 
relate, both in lithological character and in 
their relation to the physical geology of the 
country, with formations of the above- 
mentioned ages in A'ictoria. where tlie tertiary 
divisions are more clearly defined, and AA'itli 
which I am personally familiar, the use of the 
above terms may be justified here. 
Sketch section showing relative positions 
of the formations: — a, recent river deposits. 
Jj, pleistocene terrace drifts along river valley. 
c, newer pliocene “ lead,” covered by basaltic 
trap, d €, older tertiary tin-bearing gravels, ^ 
clays, andironstone, containing lower miocene g 
fossils, leaves, and plant-stems. /, carboni- 
ferous strata, upheaved by granite, g h, 
greenstone trap, penetrated by granite dykes. 
Eecekt. 
Tlie deposits under this head arc too well 
known to require much comment. They 
embrace all those river drifts, alluvial and 
other surface accumulations, which are in 
course of formation at the present time. They 
are of great economic importance both to the 
agriculturist and to the miner. In the Coinet 
Tin Mine, Cope’s Greek, eight men have 
washed out 6 to 8 cwt. of stream tin per day. 
Further up Cope’s Creek, in the Lyngarra 
Mine at Captain Swinton’s Station, and in 
the adjoining Victoria Tin Mine, even richer 
yields have been obtained. 
A 
■>c-. 
U. 
This locality, I believe, contains the richest and most permanent of 
the recent tin deposits in the district. On Middle Creek, about 30 tons 
of ore were obtained by fifteen men in three months ; well cleaned ore 
is worth at the mine from £50 to £00 per ton. Other instances might 
also be given to show the value of the recent alluvia. They arc 
