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the fuels are better suited for this pwrpose, and ironstone probably still — ee 
5 
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B. N. A. BOUNDARY COMMISSION. — 



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A third specimen from the Great Valley axenccion for iron 
gave a percentage in the raw ore of 37.95. +) 
A detailed analysis by Dr. B. J. Harrington, of a specimen “of i 
stone obtained by Prof. Bell, near the Dirt Hills, will be found in: the 
Report of Progress of the Geological Sea of Canada, 1873-74, } 
241. | AR ) 
429. It would appear that the iron ores of this formation rank high in ie 
the class to which they belong, and that if occurring in sufficient. quantity. Pi 
they might eventually become of great economic, importance. I have not — 
seen, however, in the vicinity of the Line, any place in which they are s oe 
abundant as to warrant the hope of the profitable production of iron. Ine 
some localities, great surfaces are more or less thickly covered with no- i 
dules which have been left behind by the erosion of the containing rocks; te 
and it is of course possible that further search may lead to the discovery. 
of sections in which so many bands occur as to render it profitable to 
work over the entire bank for their extraction. et 5 
430. The poor ironstones of the eastern out-crop of the Cretaceous Re. 
have already been described (§ 185). In the western extension of the — ee 
same division of the Cretaceous, ironstone is much more abundant, espe- ¥: iid 
cially where it holds the large septarian nodules described by Dr. Hector | Bee % 
as characteristic of his group C. These in some places are rich and pure ; 
ironstones, and were noted to be specially abundant in some of the sec- aa 
tions south and west of Wood Mountain. These rocks may in some © fea 
places occur with sufficient ironstone, near good lignites of ae Tertiary, — : an 
to be of economic interest. = 
431. If the manufacture of iron is ever to be carried on ona large — 
scale, for the supply of the interior region of the continent, it will proba- — i 
bly be, however, toward the eastern base of the Rocky Mountains. There “a ,. . 































occurs quite as abundantly in the formation. There, too, it may confi-_ 
dently be expected that search will bring to light deposits of the richer 
classes of ores among the palxozoic rocks of the mountains. 
