analyses of canadian minerals. 509 



(4.) Iron Ore from Thunder Bay, Lake Superior. 



This sample consisted of fine-grained magnetic ore, comparatively 

 light in colour, very hard, and breaking with irregular splintery 

 fracture. Sp. gr. = 4-98. Its analysis shewed : 



Protoxide of Iron 25-8'7 26'18 



Sesquioxide of Iron 58-48 SS'VO 



Sesquioxide of Manganese 0-34 0'2'7 



Silica 15-46 14-68 



100-15 99-83 



Metallic Iron = 61 p.c. 61-36 p.c. 

 Note. — This ore contains merely faint traces of titanium, phosphorus, and 

 sulphur. The large per centage of silica detracts, however, greatly from its 

 otherwise pure quality. Unless carefully slagged by a large addition of suit- 

 able flux, the silica would eat into the furnace lining, and would also rob the 

 ore largely of metal in passing into slag. The extreme hardness and splintery 

 nature of this ore are likewise objectionable features. 



(5.) Auriferous Mispickel from Marmora (Lot 7, Con. ix). 



The sample subjected to assay was obtained personally from a 

 depth of about 70 feet below the surface of the ground. It weighed 

 thirty-six pounds, and gave the following results : 



(1.) Crushed sample, as brought to surface. 



Gold . . .2 oz., 13 dwts., 16 grs.=$55 44. . . . ) p^^ ^^^ ^^ 2000 lbs. 

 feilver 4 dwts., 16 grs \ 



Gold. . . .3 oz., dwts., 12 grs.-£12 10s. stg ) p^^ ^^^ ^^ ^240 lbs. 

 Silver ...... 5 dwts., 5^ grs ) 



(2.) Sample parlialli/ freed by rough dressing from intermixtd quartz. 



Gold....4oz., 6dwts., 8grs.=P9 1S....Jp^^^^^^f 

 Silver 7 dwts., grs ) 



Gold . . .4 oz., 16 dwts., 17 grs.=£20 stg... . } p ^ . ,, 



Silver 7 dwts., 20 grs f ^ ^^ ^^"^ °^ ^-40 IDs. 



(3.) Portion of pure or nearly pure mispickel. 



Gold 5 oz., 5 dwts., grs.=$108 46. . . ) t^ rp r nnnA n 



Silver 9 dwts., 8 Irs...! [ Per Ton of 2000 lbs. 



Gold . 

 Silver 



.5 oz., 17 dwts., 14 grS.=£24 6s. stg, > r> m e on^n n 



.lOdwts., ll|rs ^ ? Per Ton of 2240 lbs. 



Note.— -These essays, published in a report on the Dean and Williams Mine 

 last December, fully confirm the fact to ■which attention was first called by the 

 ■writer some time ago, that the true ore of gold in the Hastings District is the 

 mineral Mispickel. As this ore occurs abundantly throughout North Hastings, 

 and is ev'erywhere more or less auriferous, the amount of gold locked up in it 

 in that part of the Province alone must be exceedingly great. It is equally 

 aurifercus, and has been equally neglected, in Nova Scotia. 



