84 
Mines and Mineral Statistics. 
Pride of the Panics and Pino Pidge Tin Mines, Lower Cope’s Creek. 
Small nests of tin crystals have been found in the granite, but no 
defined lode. A few miles \ov>er dow n Cope’s Creek the granite 
changes into a whitish, very coarse-grained rock, traversed by large 
quartz reefs hearing about E.S.E. 
The Elsmore Mine T have twice inspected. It has already been 
described by Mr. Gr. H. F. Ulrich, F.Gr.S., in his paper on Eecent T'm 
Ore Disroverie-^. read before the G-eologieal Society. As a more 
faithful description could not be given, 1 will quote hero an extract 
from it : — ** Perhaps the richest mining area as yet discovered is that 
of the Elsmore Company, situated about 12 miles east of the boundary 
oflnvcrell. It lies on tlio north-west side of the Macintyre Piver. 
and includes a granite range about 25() feet in lieight and nearly 2 
miles in length, dip]niig on all sides (save that towards the river, 
beyond which the rock extends a considerable distance) beneath basalt. 
The granite is micaceous, and rendered por])liyi*itic by crystals of 
white orthoclase, which frecpiontly reach several inches in size ; bluish- 
grey oligoclase is also, though sparingl}’’, associated. It is traversed 
by ([uartz veins several inches to above a foot in thickness, which 
contain cassitcriteiu fine druses, seams, and solitary crystals. Portions 
of these veins are higldy micaceous, and represent in iact the rock 
called “ Groisen.” characteristic of tin ore districts of Saxony and 
Pohemia. In tlie tin ore localities of tlic Beeclnvorth Grtld Field, 
Victoria, this rock occurs also in a similar manner, but tlic surrounding 
granite is there very fine grained, and higlily felspathic (enritic), and 
rarely shows i>orphyritic texture. Of far greater importajmc, how- 
ever. than these veins, are dykes of a softiu' kind of granite, which 
consists perhaps for 75 per cent, of its mass of small scaly greenish 
mica, and the remainder of quartz ; felspar being but A’ery rarely 
observable. Tlirough these micaceous dykes cassiterite is not only 
well distributed in implanted crystals from the size of a pin’s head to 
above that of a pea, but it occurs also in irregular veins of scA^wal 
inches thickness, and in nests and branches yielding lumps of nearly 
pure ore up to above 60 lbs. in weight. Part of the mass of one of 
these dykes forms a regular breccia of mica and imperfectly crystallized 
tin ore, cemented by hydrous oxide of iron. 
“ The actual number of such dykes traversing the granite range is 
not known as yet. I saw six of them, each several feet in thickness, 
but there can be no doxibt that more will be foiind when the ground 
is more minutely prospected than has hitherto been the case. 
‘‘As far as could be seen in the small workings of the Elsmore 
Company, on several of the quartz veins and dykes the dip of the 
latter is rather steep, and the walls ])retty well defined, hut thickness 
irregular. Thin flat veins join in occasionally. The deepest shaft sunk 
ill one of the quartz veins was about (>0 feet ; and the tin ore occurred 
in irregular thin veins, and often lieautifully crystallized in drusy 
cavities. On examining the spoil heap round this shaft, I discovered 
lumps of ferruginous clayey substance, full of light green and yellow 
hexagonal prisms of beryl, associated with larger quartz crystals. I 
also observed beryl on crystallized cassiterite specimens, its fragile 
prisms, generally not thicker than a stout pin, and u]i to an inch in 
length, interlaced between the tin ore crystals. Of other minerals, I 
found in the stuff excavated from one of the dykes frequently patches 
