Mines and Mineral Statistics. 
85 
of arscnifal pyrites, and, more rarely, grains of eopper pyrites, the 
former gcnerall}’" eontainiiig imbedded crystals of tin ore. From 
another part of the ground the manager preseryeil a large ^hece of fine 
rock crystal, -which also enclosed small crystals of the ore. 
“Wolfram has been found at several places forming nests in the 
granite, hut not in association with cassiterite. Touching the latter 
itself, it is mostly of a pitch black colour, occasionally translucent 
brown and liyacintb-recl, and from some places greenish, with a very 
pretty play of rays of red ami yellow colour tliroiigli it. Its crystalline 
form is rather sim])]e as regards pyramidal planes ; the ])risTn is gene- 
rally, however, liighly modified. Twins like tliose from the- Schlag- 
genwahl mines are A'ery abundant, and crystals jicrfectly developed 
all round, both twins and simple ones — the hitler with tweh’e-sided 
prism and one pyramid — are not rare amongst the ore waslied from 
the drift.” 
A crusliing of over 100 tons of the micaceous rock gave almost one 
per cent, of ore ; and from one of the (piartz reefs, at a depth of about 
80 feet, the stoue yielded from about 3 to 10 per cent, of tin ore. As 
th(‘re are several similar quartz reefs on the ground, the future pros- 
pects of tliis mine may he considered very encouraging. 
The rock formation at the IVeM'stcad Tin Mine, which lies about 
Smiles to the east, is of the same character as that of . Elsinore. It 
consists of a ])or[)hyritie granite, trnverse<l by tin-bearing quartz reefs 
and irregular beds ami isolated patches ef micaceous rock. 
One of these small patclies which I particularly noticed was about 
18 inches in diameter, and tliickly studded with crystals of tin ore. 
One of the quartz reefs has been opened, ami contains besides tin ore, 
iron and copper pyrites, green carbonate of eopper, and wolfram. The 
reef is from 2 to 3 feet thick, and bears about E.N.E. Xery large 
crystals of quartz occur in it, some of which have crystals of tin cuedosed 
within them, similar to tliose pre^dously described from the Albion 
Mine. 
The above remarks will also apply to the granite of the adjoining 
Karaula Tin Mine. All the granites of tlie disti'ict contain ahundanco 
of black tourmalitie (schorl), which chiefly occurs in radiating masses, 
together witli beautiful crystals, often of largo size, of smoky quartz, 
in dense cavities in the rock. 
In cutting a race through the granite at the Sydney Tin Mine, 
Middle Cr(*ek, “ a blov^” or sudden expansion of quartz was exjiosed. 
In the quartz I found abundance of tluor spar in imperfect octahedral 
crystals of an amethystine or greenish colour. With tliis were also 
galena, iron pyrites, and molybdenite. One small specimen I obtained 
with all these minerals togetlicr. 
A reef of chalcedonic quartz occurs a short distance north of the 
Sydney Tin INfine, Middle Creek. 
Small crystals of quartz in the form of a double hoxahedral p^u'amid 
are of frcipicnt occurrence in the granites. 
GitBEKSTOJfE TeAP. 
The greenstone trap, already described in my former Eeport, occurs 
near Middleton, and extends for some distance on either side of Cope’s 
Creek, as far up as Captain Svvinton’s Station. It may be traced in 
places between the granite and basalt boundaries, from the Macintyre 
