260 



MINERALS FOR THE PARIS EXHIBITION. GILPIN. 



Samples of similar ores are shown from St. George's River, 

 Eagle Head and French Road, in the same County. 



In Antigonish County the traces of copper ore are wide 

 spread. At some points prospecting work has given promising 

 results, but as yet the various licenses to search have received 

 little attention. 



A sample of copper ore from St. Joseph's is from a bed of 

 mixed chalcopyrite and shale in lower carboniferous strata close 

 to their junction with precarboniferous rocks, presumably of 

 lower silurian age. There are about eight beds, reported to be 

 from two to six feet in width The following analysis of a 

 sample from the No. 2 vein is by the Geological Survey Depart- 

 ment : 



Copper 27.00 



Iron 29.70 



Sulphur 33.50 



Silica. 3.40 



Moisture 20 



Carbonate of Iron 6 20 



100.00 



At Poison's Lake somewhat extensive development work has 

 shown, in Devonian strata, beside a dioritic dyke, a large mass 

 of carbonate of iron and calc spar carrying copper pyrites. The 

 ore is stated to average from 9 to 16 per cent, of copper, and to 

 carry several dollars' worth of gold and silver. On the opposite 

 or west side of the Lochaber lake, similar but richer ores occur 

 in numerous veins with spar and specular iron. Exploratory 

 work done here a number of years ago was fairly promising. 



In addition to these deposits, carbonates, sulphides and 

 silicates of copper are not uncommon in the carboniferous shales 

 and sandstones in irregular masses, frequently rich, but limited 

 in extent. Further work may, however, show localities where 

 this class of deposits will reach economic values. 



In Pictou County similar ores occur at a number of places in 

 the permo-carboniferous and in the millstone grit and lower 

 carboniferous. Traces of copper sulphide also occur in the 

 district forming the water shed between the Bay of Fundy and 



