BY EDWD. B. LINDON, A.R.S.M. 55 
III—ANHYDROUS CHLORIDES, Etc. 
HatirE—Common Satt—Rock Satt—Comp. Na Cl, but seldom 
found in a pure state. 
Salt is found on the Upper Burnett ; on Sylvester Creek flowing 
into the Herbert River, from which locality some very good 
isometric crystals said to contain 97 per cent. of chloride of 
sodium have been obtained; and at Bundanba, near Ipswich, 
where an earth impregnated with salt occurs. 
Mr. R. L. Jack says that ‘‘ On the Bohle River, near Townsville, 
half a mile above the hotel, there occurs a soft half-consolidated 
bed of greyish brown sandstone covered with a crust of white 
salt. It would be interesting to know whether the salt had 
effloresced from the sandstone itself, or had been deposited on the 
evaporation of the water in the pools. The water remaining in 
adjacent pools at the time of my visit did not taste perceptibly salt.” 
CERARGYRITE—HORN SILVER—Compp. Ag Cl. 
At Mount Albion, Silverfield, Tinaroo district, large quantities 
of Cerargyrite are being mined, the ore occuring in association 
with galena, and assaying in some cases as high as 75 per cent. of 
silver, which means that it is almost chemically pure. Argentiferous 
earth, consisting mainly of chloride of silver and assaying as high 
as 2,300 ozs. of silver to the ton, occurs in the same locality. 
The chloride is found mostly in nodules of massive form, and 
at one period was not recognised as of value, its sectile nature and 
dark colour causing it to be considered valueless ; this mistake 
has been made in other countries besides Queensland, for I have 
known of Californian miners throwing away this valuable ore 
under the impression that it was graphite. 
IV.—OXYCHLORIDES. 
ATACAMITE—Comp. oxychloride of copper. 
Atacamite is not at all of common occurrence in Queensland, 
though some malachite is of such a dark colour as easily to be 
mistaken for it, unless care be taken. It has been found, how- 
ever, at Mount Perry; on the the Nebo goldfield; and forming 
very beautiful specimens of pseudomorphs after cuprite at the 
Cloncurry copper mines. 
