40 
can be followed for 30 miles farther in a direction a little west of north to 
a lake, 1,700 feet above the sea, described in an earlier part of this report. 
The road to the mine turns northeast along Berry brook, following its 
northerly fork, at first through low ground until the blazed boundary line 
between Matane and Gaspe counties is reached, then rising rapidly to 
the mine, which is in the recently instituted township of Lemieux, 10 miles 
from the river. Aneroid determinations by the writer place the mining 
camp at 1,820 feet instead of 2,000, as it has been estimated previously. 
Geology of the Federal Zinc and Lead Mine Region 
Through the courtesy of the Federal Zinc and Lead Mine Company 
several days, passed at their comfortable camp, gave an opportunity to study 
the geology, both Paleozoic and Pleistocene, and to see the ore deposits. 
The solid geology has been described in a general way by Prof. Mailhiot 1 
and in most respects his account is confirmed by the writer’s own work. 
So much of the region is heavily forested or covered by swamps that 
geological work is by no means easy, since rock is to be found only along 
the stream channels or on bare parts of the higher summits. Good exposures 
occur, of course, along the newly constructed road to the mine and in the 
strippings and excavations of the mine itself. 
The rocks found along the earlier half of the road to the mine are red 
or grey sandstones sometimes covered with boulder clay; along the latter 
half, shale with some sandstone alternating with basic eruptives, partly 
amygdaloidal. On a road-cutting just below the camp soft shale or slate 
with some cherty limestone has a strike of northwest and southeast, instead 
of east and west as expected, and a dip of 50 degrees to 70 degrees southwest. 
At one place a badly weathered diabase cuts the sedimentary rocks. 
A rapid ascent of 300 feet from the valley leads to the buildings of the 
camp, where the bush has been cleared, exposing a weathered surface of 
rock, slate, and chert with some shaly grey sandstone; and a boss of 
greatly weathered granite porphyry occurs at the summit. Strippings a 
half mile north at the second shaft disclose mainl} r black slate. 
In limestone layers east of the camp Mailhiot has found fossils deter- 
mined as Devonian by Kindle 2 , so that the age of the sedimentary 
rocks is settled. 
An exclusion to Brandy brook showed slaty sandstone and a very 
coarse syenitic rock; the bed of the brook contained boulders of felsite, 
porphyry, porphyrite, and amygdaloid. As the eruptives of the region 
have been described by Mailhiot no particular account of thin sections 
made from the hand specimens collected need be given. Almost all of 
those studied by the writer are badly weathered. 
In most places the rock surface is much shattered and decayed, looking 
as if it were unglaciated, so that it was a surprise to find in small amounts on 
both roads near the camp undoubted boulder clay with well striated stones, 
including serpentine, which must have come from the Mount Albert region 10 
miles to the north. The mountains rising to 2,000 feet immediately north 
of the camp must have been crossed by a glacier coming south from the 
Shickshocks, though they were so lightly touched by the ice that the 
products of rock decay forming their surface were hardly disturbed. 
1 “Mining Operations in the Province of Quebec/ 1 1918, pp. 117-145, and 1919, 
pp. 134-146, maps. 
2 “Mining Operations in the Province of Quebec”, 1919, pp. 138-9. 
