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LAKE OF THE WOODS—INTRUSIVE GRANITE. 33 
62. Bucketé Island, on the south side of the Inlet where it widens to 
the lake, is also composed of granite, belonging to the same mass, but 
red in colour. Here are also many segregated veins and bunches of 
felspar and quartz. Several of the veins were found to have a direction 
of N. 40° E. The felspar is pale pink, the quartz scarcely milky, and 
there are occasional plates of white mica; the veins thus showing all the 
minerals of the matrix. The quartz penetrates the felspar much more 
than is usual in such aggregations. Two anda half miles east and a 
little north, of Bucketé Island, granite belonging to the northern branch of 
the mass is again seen, but considerably reduced in breadth, and bounded 
on each side by highly altered Huronian. 
63. The Southern branch is seen furthest south, about a mile south- 
west of Flag Island, in close conjunction with the Laurentian gneiss already 
described, and is there reddish grey and compact. It continues in a 
gereral north-eastward direction for about three miles, forming in its course 
nearly the entire mass of Flag Island, and then runs eastward for a 
mile or two, and finally again takes a north-east course and passes into 
the main mass. The southern part of Flag Island is composed of 
greenish-grey and pinkish-grey syenitic granite, of rather coarse grail 
and somewhat peculiar aspect. The felspar is greyish and pinkish, the 
quartz nearly transparent and colourless, and the mica and hornblende 
black. This rock is traversed by many veins and lenticular masses of 
compact, greenish-grey rock of dioritic aspect, fine-grained and siliceous. 
It is probably an imperfect granite, but much resembles the gneissic 
masses already described as occurring between the layers of greenish 
much-altered Huronian rocks. (§ 56). Some of these veins run nearly 
in straight lines, with a general course of north-east and south-west, 
and though presenting much the appearance of stratified beds which 
had resisted the metamorphism converting the surrounding rocks into 
granite; are evidently intrusive dykes, and contain broken fragments 
of the containing rock. The granite here also shows small, irregular 
pockets and veins of vitreous quartz. 
64. The northern part of Flag Island is composed of a compact pink 
_ granite. About a mile north-west, a similar red granite is again seen, and 
beyond this the rock becomes syenitic, changing first to a red syenite, and 
then to a grey rock, which might be called a syenitic diorite. 
65. The main body of the intrusive mass, where crossed about eleven 
miles east of the Angle Station, has a breadth of about two and a half 
miles. Its northern edge, in this place is composed of a pinkish granite, 
3D 

