20 D D 



Hudson's strait and bat. 



Pyrites from 

 vein.". 



Gold in quartz 



were collected at dift'ei-ent points in the above distance. Small 

 pieces of soft dark-gi eenish schist adhere to some of them. Mr. 

 Hoffmann has made an assay of one of the specimens of pyrites from ii 

 Ooldandsilver. bay south of Cape Jones, which forms the southern horn of Eankin 

 Inlet, and found it to contain no copper, but to show traces of gold and 

 0.175 of an ounce of silver to the ton of 2,000 pounds. A specimen of 

 similar pyrites, obtained fi"om a place on this coast which the Eskimo 

 call Inari, in 1870, had a small quantity of light bluish-grey mngnesian 

 limestone adhering to it. These specimens, which all resemble the 

 pyrites from Tilt Cove in Newfoundland and Capelton in the Eastern 

 Townships, except in the absen^-e of copper, are evidently from good- 

 gized veins. The mineral is in common use among the Eskimo for 

 striking tire. The discovery of traces of gold and silver in the speci- 

 men last assayed by Mr. Hoffmann is interesting. Specks of gold are 

 mentioned by Tennant in a specimen of quartz from Repulse Bay. 



The majority of the lithological specimens brought from the coast in 

 the whole interval between Eskimo Point and Repulse Bay, correspond 

 with the rocks of the Huronian series. Laurentian types are absent 

 from the collections. So far as we know, therefore, the probabilities 

 are that Huronian rocks prevail all along the north-west coast of Hud- 

 son's Bay, from Eskimo Point to Chesterfield Inlet, and siga'n at Re- 

 pulse Bay ; possibly also, in the interval between the last mentioned 

 localities. 



Marble Island, as far as examined, consists mainly of light-colored, 

 fine grained quartzite, associated with glossy mica-schists. Among the 

 specimens obtained from the mainland, is one of similar quartzite of a 

 delicate pink or flesh-color, from a point on the south side of Nevil 

 Bay. On Marble Island the average strike is southwestward or in this 

 direction, so that the two localities may occupy the same geologica 

 horizon. "White quartzite is reported as occurring further south-west 

 in the interior, especially in the region to the north-east of Hatchet or 

 "Wollaston Lake, and in my report for 1882, page 28 C C, it was stated 

 that boulders of this rock are abundant at the Long or Methy Portage^ 

 still further south-west. 



Huroni.in 



series on the 

 N. W. side of 

 Hudson's Bay. 



Quartzite of 

 Marble Island 



Quartzite on 

 mainland . 



Quartzite in 

 the interior. 



