GEOLOGY 



trap in small grains which frequently present a rounded or semi-fm 

 appearance. The principal localities comprise Battle Island and the 

 Islands of St. Ignace and Michipicoten ; also Maimanse arid Cape 

 Gargantua, According to the Report for 1863 of the Geological 

 Survey, Native Copper occurs likewise in thin plates in red shales 

 of the Quebec series, on the Etcheniin River, below St. Henri, and 

 at Point Levis, opposite Quebec ; as well as in a kind of amygdaloidal 

 greenstone underlying these shales at St. Flavien, in the same district- 

 It is stated to have been found, moreover, in small dendritic and 

 other masses, accompanying copper pyrites, apatite, and a silvery- 

 white mica, in a quartz vein in the Township of Barford. 



7. Native Lead : Lead-grey ; soft and malleable. BB, fuses easily, 

 and becomes gradually volatilized, coating the charcoal with a yellow 

 ring of lead oxide. 



Native lead is of very rare occurrence. The only specimen dis- 

 covered in Canada, is in the form of a thin string in colourless quartz. 

 It was obtained by Mr. Mclntyre of Fort William, Lake Superior, 

 from the vicinity of the Kaministiquia, Thunder Bay. As the quartz 

 contains a few scales of specular iron ore in a perfectly normal con- 

 dition, it is evident that the lead cannot have arisen from the reduction 

 of galena by the action of heat. 



8 Native Bismuth : Silver- white with reddish tinge, but usually 

 tarnished. Sectile, but not malleable. Hemi-hexagonal in crystalli- 

 zation, but commonly in small masses of lamellar structure. H = 2.0 

 2.5 ; sp. gr. about 9.7. BB, melts easily and volatilizes, coating 

 the charceal with yellow oxide. Soluble in nitric acid ; the solution 

 yields a white precipitate of bismuthic oxide on the addition of water 

 in excess. 



The oiily examples of Native Bismuth hitherto met with in Canada, 

 were recognized by the writer in some rolled pieces of quartz, obtain 

 from near Echo Lake, on the north-west shore of Lake Huron. 



9. Native Antimony ; Tin or greyish-white. Brittle. Chieny in 

 small masses of lamellar or fine granular structure. H = 3.0 3.5 ; 

 sp. gr. 6.65 6.75. BB, melts and volatilizes, tinging the flame 

 pale-green, and depositing a copious white crust on the charcoal. 

 The only known occurrence of Native Antimony in Canada, is in the 

 Eastern Township of South Ham (lot 27 of first range), where, mixed 

 with antimony glance, &c., it forms several narrow veins in a clay 

 . late of the Quebec Group. 



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