TIN DEPOSITS OF NEW SOUTH WALES. 101 
to about 4 inches, and a quantity of white mica occurs in the 
leader which is consequently greisen, and so might be looked upon 
as a segregation v 
These veins ould appear to have been formed by fractures of 
the rock during the upheaval of the granite, by the folding of the 
slates in fact, and as no subsequent movement appears to have 
taken place it is extremely improbable that these veins will lead 
down to true lodes below, but will most likely finish at the junc- 
tion of the granite and slate in depth. The granite, however, would 
probably be iy cag with tin at the junction, or even contact 
A good deal of work has been expended on these veins, a 
I venture to think more attention has, perhaps, been devoted % 
them than they deserve; but gash veins are of such rare occurrence 
that these deposits are deservin ing of mention, although even these 
are very poor illustrations of a + elas of deposits to eye some 
authors attach so much importance, but t which has 
previously been called in ati both by Mr. J. A. Palins and 
myself. 
Near Silverton tinstone has been found as large crystals through 
greisen which is traversing schist, the granite cropping out, near by, 
both to the east and west. At Pearson’s claim, Poolamacca, . 
large body of stone is reported to re about 8 feet wide betwee 
well- defined walls, but the rock would lead one to believe that it 
had been intruded from below. “ss characters of both the vein- 
stuff and the country would augur well noe the future of the 
district from a tin-producing point o of view. 
ASSOCIATED MINERALS. 
Other minerals have been found in great variety associated with 
the deposits of tinstone in New England, although they are not, 
hitherto, quite so diverse in character as those described from the 
tin-bearing areas so but this is probably due to the fact 
that the country has not yet been so carefully studied, mineral- 
ogically, as the older and more settled mining districts of Cornwall 
and Germany. 
Most of those minerals, however, which are generally looked 
upon as the inseparable associates of tinstone elsewhere have been 
found in New England; and first of all should be mentioned 
wolfram, which is the curse of the tin-miner in Cornwall, where 
it frequently occurs in the same lodes as the ti and, in conse- 
stone, defies all attempts at separation by purely m mechanical means. 
This wolfram has been found somewhat plentifully in New Eng- 
land, but, fortunately, so far it generally occurs in different veins 
r. Wilkinson’s Report on the silver-bearing lodes of the Barrier 
org p. "10, 1884, 
