254 THE METALS IN CANADA. 
segregation, filling up fissures which do not pass beyond the limits of 
the limestone. 
The same calcareous band, is traceable through several townships in 
a north-easterly direction parallel with the mountain ranges ; and 
transversely to this course, a series of ridges nearly parallel to the first, 
are produced by repeated folding of the strata into synclinal and anti- 
clinal forms ; at many points in this series copper ore has been found 
under the same circumstances as at Upton. " The ore is very irregu- 
larly distributed in bunches, some of which might produce five, and 
others two to three hundred weight of between twenty and thirty per 
cent, to a fathom of ground ; but the irregularities appear to be so great 
as to make it questionable if the ore is capable of being profitably 
mined." 
Acton. — A very remarkable exception, however, occurs in the rich 
deposit forming the well known "Acton Mine" in Bagot county, an 
admirable description of which will be found in Sir William Logan's 
Report for 1858, to which we must refer our readers ; as well as to an 
interesting and lively sketch of the same locality in the "Canadian 
Naturalist and Geologist," Vol. V. 
In this case the greater proportion of the ore is deposited in brec- 
ciated masses or conglomerate beds, the pebbles being limestone, partly 
angular and partly rounded, and the paste consisting of the variegated 
and vitreous sulphurets of copper ; the beds in question being subordi- 
nate to the stratification of the limestone rocks of the country. Many 
examples of similar brecciated bunches occur in the true veins of Corn- 
wall and Devonshire, in England, as related by De La Beche,* and Sir 
William Logan states that the whole conditions of the case bear a 
striking resemblance to those of the copper deposits of the Ural Moun- 
tains, as described by Sir Roderick Murchison. 
Referring to the Acton deposits, Sir William Logan says : " There 
is no doubt the mass of ore is a very important one ; already after but 
nine weeks working not far from 300 tons have been housed, supposed 
to contain about thirty per cent, of pure metal. The value of this quan- 
tity would be about 45,000 dols. ; while inclusive of lordship, the 
mining expenses and those necessary to carry the ore to a market will 
be comparatively small. The quantity of ore excavated seems to have 
produced but a moderate impression on the total mass in sight." Since 
the above was written additional masses of ore are said to have been 
discovered at the same locality, and the working has been equally suc- 
cessful. 
Leeds, &c. — In the townships of Inverness and Leeds, Megan tic 
county, copper ore has been discovered at several points, in a different 
form from any we have hitherto noticed, and mining operations are 
there carried on with much vigour and skill. The ore occurs in rocks 
* Report on the Geology of Cornwall, Devon, &c, page 323. 
