238 CKUISE OF THE NEPTUNE 



1 The rock at the point south of Corbett inlet is a massive 

 green, fine or medium-grained diabase, which is now almost 

 entirely altered into a mass of chlorite, epidote, zoisite and cal- 

 cite. - This diabase is cut by many small veins of quartz 

 and calcite, which contain large quantities of pyrite, arseno- 

 pyrite and chalco pyrite.' 



' From Term point westward the shore is rocky, and the steep 

 rocky cliffs descend into rather deep water. The rock is a dark- 

 green diabase almost entirely altered to sausserite, and is cut 

 by many veins of quartz and calcite, holding copper-pyrites.' 



' On the northern shore of Mistake bay, nine miles west of 

 Term point, is a long point of similar diabase. Seven miles 

 further southwest, about the middle of the west shore of Mis- 

 take bay, is a high point of similar dark-green diabase, contain- 

 ing in many places a large amount of copper-pyrites, and cut by 

 small veins of quartz studded with iron pyrites.' 



' Two miles south of Sir Biddy island is a prominent rocky 

 point, with a high rocky island lying a short distance off it. 

 From this prominent point the shore turns westward, and is 

 bold and rocky, being composed of dark-green fine-grained dia- 

 base, studded with copper-pyrites.' 



The above extracts from Tyrrell' s report show that on his 

 hurried journey southward from Chesterfield inlet he found 

 Huronian rocks occupying the shores of the bay for a distance 

 of nearly a hundred miles. At haphazard landings along this 

 shore traces of copper deposits were found in a number of 

 places, and these would point to important discoveries as likely 

 to follow systematic search on this area. 



A considerable amount of magnetic pyrites was found in the 

 squeezed diabase rocks along the east coast of Hudson bay, but 

 careful analyses failed to show any contained gold, nickel or 

 copper in a number of specimens from various localities on that 



