NEW SOUTH WALES COALS. 211 
11. Hypro-carson—WarataH Mine. 
Amongst the specimens in the oe collection is a ho 
of grey-coloured shale containing a curious more or less rectangu- 
lar pipe-like perforation filled with a pices aceous mineral. 
There is no history to this specimen, but it is labelled “over the 
Waratah seam,” hence it doubtless came from the colliery of that 
name, 
The mineral is jet black, highly lustrous, very brittle, breaking 
into long more or ess regular our-sided prismatic pieces. ese 
risms run at right angles to two of the walls of the pipe. 
The cross fracture is conchoidal—the powder or streak is black. 
The powdered mineral is insoluble in alcohol, bisulphide of 
carbon, benzol, ether, ammonia, caustic soda, and odium sul- 
eal but itis partly soluble in boiling nitric acid, yielding a brown 
Readily inflammable, does not fuse, burns with a smoky lumi- 
nous flame and disagreeable smell 
On platinum foil swells up but slightly. 
Specific gravity, 1:30. Hardness about 2. 
Proximate Analysis. 
Loss at 100° C. Me : : 
Volatile hydro-carbons & &e. He ‘174 
Fixed carbon Be, a3 772 Coke, 
M : oe 64'836 pl 
Sulphur ‘ 2380 
The ash is of a rich brown colour, light and spongy. No 
= is found ; the residue is fritted together and slightly alias 
Ultimate —— | 
Moisture at 100° C 3° 
— 70°246 
ydrogen 5 
Oxygen 17°630 
Sulphur 2-380 
Ash 1-064 
100-000 
It does not quite agree with any described mineral, but on the 
whole it seems to resemble albertite more closely than any other. 
5 mposition does not yield a satisfactory formula. It is 
unnecessary to make a new mineral species of this sub- 
R 
