13 



width. One twenty feet wide wculd be considered quite re- 

 markable ; most veins are less than six feet in width. 



" Gold is always native, always alloyed with silver, and 

 contains small quantities of copper and iron. Iron pyrites 

 almost always contains gold. Gold usually occurs in quarz 

 veins, which are sometimes in granite." — Phillips. 



MINE CENTRES. 



The geological conformation gives indications in many 

 cases where the mines are likely to be. The following points 

 are worthy of consideration : 



1. Generally on or near the Huronian deposits the mines 

 are found. 



2. Usually in the neighborhood of granitic intrusive 

 rock. 



3. Almost exclusively in the Lake of the Woods region 

 in quartz rock. 



4. According to Lawson, in many instances the granitic 

 cores of rock are overlaid on the shore of the lake by skirts 

 of Huronian rock. 



5. (a) The localities seemingly most developed with 

 success are the districts a few miles southeast of Rat Portage 

 where the Sultana, Pine Portage and other mines are found. 



(b) Rossland station, some eight miles east of Rat Port- 

 age, is the centre of a number of mines of which the Scramble, 

 Sweden, and others arc spoken of. 



(c) Big Stone Bay has in its neighborhood a number of 

 localities, and the Master Jack is beingworked. 



(d) The neighborhood of Whitefish Bay, to the east of the 

 Grande Presqu'ile, has the Regina, La Mascotte and many other 

 locations. 



(e) The Shoal Lake, on the west side of the Lake of the 

 Woods, whe»;e the Mikado, Gold Coin and many others occur, 

 has received attention. 



The Wabigoon district lies on Huronian horizon, and is 

 being explored and examined. Though belonging to the 

 Rainy River, as being one of its tributaries, yet the Seine 



