146 
Mines and Mineral Slalisiics, 
tlicir clay baud ore.s, wliieli latter (sec specimens) are of the same 
diameter as those above mentioned, and occujij a similar position 
in the coal measures, Avliich 1 have observed they maintain all 
through the district. Tlie broAvn iron ore near the village of 
Boweiifels is from a mass cropping out on tlie surfiice for a 
distance of several chains. 
A good .s]iecimen of llroAvn hematite is exhibited from the iron 
mines near Berrima. These mines were Avorked some years ago 
Avithout success, this result lieing attributed to the iiusnitablc 
fue emjiloyed ; but now that good smelting coal, it is said, can 
be obtained, avg may hope tliat the failure Avill be only of a tem- 
porary nature. 
Besides the abo\' 0 -ineniioned iron deposits there occurs in tlie 
Illawarra district, on the property of the North Biilli Coal and 
Iron estate, a bed of argillaceous or clay iron ore, some twenty 
feet in thickness, in close proximity to the coal seams. It has 
been most favourable reported on by Mr. J. If. Thomas, C.E., 
Mr. T. AV^. Garlick, and others ; and Mr. John Mackenzie, refer- 
ing to it, says that, in all his experience ofthirtcenyeai’s actually 
employed in daily visiting thcdillercnt mines in one of the largest 
coal and iron districts in Lancashire, J'iQglaud, he never saw a 
bed of clay iron ore so thick as this. Assays of the ore at the 
Sydney Branch of the lioyal Mint gaA^e rcspcctAcly 32'0, 3S'9, 
55*7, and 44'3 per cent. iron. 
The former (Government Geologist, the late Air. S. Stntchhury. 
mentions that, in the Great Park at Coombing, the jiroperty of 
Air. Thomas Icely, there are five small hummocks (of from 
tAventy to fifty acres each), composed of a very rich com])act 
limmatite iron, much of it being magnetic. A similar ore of iron 
forms the hack of a copper lode on the same estate. The appar- 
ent qimntity of iron is immense, and if all things else Avere com- 
patible Avitli the manufacture of iron, there is sufficient to sup- 
ply anotlier 8helfiekl for ages to come. The nearest coal, however^ 
is that at AValleraAvang, distant about scA^enty miles. 
There arc many other localities in Ncav South AYales where 
rich iron ore abounds. 
The reflection hears Avith it almost a reproach that, in this 
Colony, Avhci’e there exists such immense and valuable deposits 
of iron ore, Avith suitable coal and limestone most favourably 
situated for smelting operations, the large and increasing demand 
for manufactured iron should have to be supplied from foreign 
sources. 
Limesto’e — Colonial AIarble. 
The marble from Marulan and Cow Plat is exhibited in the 
form of tiles, AA'hich were cut and polished at the AYoolloomooloo 
Steam Alarble Works of Mr. John Young, who is now paving 
