Tin Deposits of New South Wales. 
By 8. Herpert Cox, F.C.S., F.G.S 
[Read before the Royal Society of N.S.W., 4 August, 1886.] 
INTRODUCTION. 
ALTHOUGH cassiterite or tinstone has been found on the pero 
Burra Creek, Selwyn Co.; Dabarra, Buccleuch Co.; J. ingellic 
Creek, Goulburn Co. ; Pullitop Creek, Mitchell Co. ; and again at 
Tumberumba, near Kiandra, and at Attunga, near Albury (vide 
Minerals of New South Wales—Liversidge, p- 41), and has re- 
ceived some little attention in the latter localities, the principal 
deposits oecur in the New England District, where they lie chiefly 
to the westward of a line passing from Armidale through Glen 
Innes and Tent Hill to Tenterfield, and thence to the Queensland 
Border. 
Small deposits have been obtained to the eastward of this line, 
as at the Ding Dong mine near Deepwater, but they are mostly 
in isolated patches, the eastern country being wee characterised 
by auriferous veins and disseminations; while in the western area, 
as far west as Kangaroo Flat and Spring Creek, ate 30 miles 
although the most important deposits yet found lie between 
Emmaville and Tingha. 
GEOLOGY. 
This area is replete with geologic interest, embracing, as it does, 
a great variety of pene rocks both of hydrothermal trappean 
and voleanic origin, as well as Silurian slates, and those deposits 
of later date in ish the alluvial tinstone occurs and which 
afford us some history of the physical geography of the country’ 
during periods which have preceded our own. 
An official geological sketeh-map of _ district has been com 
piled by Mr. C.S. Wilkinson, from the researches of the late Rev. 
W. B. Clarke; but the first step in phar the geology in detail 
has been undertaken by Mr. T. W. Edgeworth David, Geological 
Department, 1883, a map of the principal tin-mining area n 
Emmaville, which will even ntually form the basis upon which the 
gehere structure of the country will be determined. 
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