338 On Metallic Minerals. 



which it is probably derived in a great measure, is found 

 abundantly in many places in the two provinces, particu- 

 larly in rear of the two seigniories of Batiscan and 

 Charaplain, L. C. where, and in the neighbourhood of 

 which seigniories it is procured in considerable quantity. — 

 It is the only extensive deposit of this species of ore, which 

 has yet been worked in Lower Canada, and the furnace at 

 the forges of St. Maurice is entirely supplied by it. It 

 belongs to that variety of the argillaceous oxide called bog 

 ore. — (Note 6.) 



Bog ore is characteristic of an alluvial formation, indeed 

 it is one itself, as no doubt exists of its being a deposit from 

 water holding iron in solution. The supposition that it 

 grows is a very vulgar error. 



" The iron obtained from bog iron ore, is what is termed 

 cold short, and therefore can rarely be used for plate iron, 

 — never for wire." — Phillips. 



CARBONATE OF IRON. SPARRY IRON ORE. 



The carbonate of iron is found in the immediate neigh- 

 bourhood of the works at Marmora, where it is associated, 

 as has been said, with the red and brown oxides of iron, 

 and specular iron ore. A vein of it has been worked 

 chiefly as a flux for the furnace. The vein has been found 

 to be continuous, but the ore is not easily extracted. 



A vein of the carbonate of iron, with pearl spar, has 

 been observed to traverse grey wacke at Dr. Mills's quarry 

 at Cap Rouge. 



" Sparry iron is a very valuable ore, more especially as 

 it is readily converted into .steel, and is hence sometimes 

 called steel ore."— Cleaveland. 



