MINERALS AND GEOLOGY OF CANADA. 46} 
calities throughout the Province; but largely in Norfolk County, 
C. W., and along the north side of the St. Lawrence, especially in the 
Three Rivers District, and in the counties of Vaudreuil and Bellechasse, 
Canada East. The iron ochres, generally associated with the bog ore, 
have a similar origin (see descriptions of these, in Part II.) The red 
ochre is anhydrous, but the brown and yellow varieties contain a cer- 
tain amount of water, usually about 20 per cent. 
Economie Materials of the Post-Tertiary Deposits :—These com- 
prise, Gold, Bog Iron Ore, Ochres, Brick Clay, Shell Marl, Moulding 
Send, and Peat. 
Gold :—Native gold in fine grains, including here and there a small 
nugget, occurs in the Post-Tertiary sands of the metamorphic region 
south of the’St. Lawrence: or throughout the area lying between the 
River Richelieu and the Gaspé peninsula; and more especially along 
the valleys of the St. Francis, Chaudiére, Riviere des Plantes, Etche- 
min, and Riviére des Loups. (See under ‘‘ Native Gold,” in Parr IL. 
Lay 
Bog Iron Ore :—The principal localities of this substance are given 
above. The ore, at present, is only melted at the Radnor Furnaces, 
Batiscan, C. E. The neighbouring furnaces of St. Maurice, after con- 
tinuing in operation for over a century, went out of blast a few years 
ago. 
Ochres :—These are capable of extensive use as paint materials. A 
_ yellow variety, becoming brown and red on ignition, occurs abundantly 
in the county of Middlesex, and also at Sydenham and in the town- 
ship of Nottawasaga, in Canada West. Red, brown, yellow, purple, 
and greenish-black ochres occur likewise in workable quantities near 
the mouth of the Ste. Anne River, and in the seigniories of the Cap 
de la Madelaine and Pointe du Lac, in Canada East. Also in the 
Eastern Townships. The black ochres contain a considerable quantity 
of peroxide of mangauese. 
Brick Clay :—Clays suitable for bricks and tiles, occur very gen- 
erally throughout the Province. White or yellow bricks are largely 
manufactured in the neighbourhoods of London, Hanover, Toronto, 
Cobourg, Peterborough, &c. Red bricks at Walkerton, Sydenham, 
Toronto, Montreal, St. Jean (Lobiniére), and many other places. 
Manufactories of drain tiles are in extensive operation at Treadwell 
village, on the Ottawa, and in the vicinity of Quebec. 
