96 Canadian Record of Science. 



3. — Garnet. 



A number of varieties of this interesting species are 

 known to occur in Canada, but as yet few of them have been 

 made the subject of careful investigation. Dr. Hunt 

 analysed a specimen from Lake Simon on the River Rouge 

 which proved to be an iron-alumina garnet (almandine) 

 containing 8.85 per cent, of magnesia. He also showed 

 that a curious white rock associated with some of the ser- 

 pentines of the Eastern Townships had the composition of 

 lime-alumina garnet. The beautiful green garnet of Orford 

 in the Eastern Townships was also analysed by him and 

 found to contain 6.20 per cent, of chromic oxide. 1 Another 

 green garnet from one of the apatite-bearing veins of Wake- 

 field was analysed by the writer, and contained 4.95 per 

 cent, of chromic oxide. 2 The garnet from lot 7, range 1 of 

 Wakefield, which varies from " colourless to yellow and 

 brown," was found by C. Bullman to be a trUe lime-alumina 

 garnet. 3 



Spessartite occurs at the Villeneuve mica mine in this 

 province 4 and andradite (lime-iron garnet) at the Malaspina 

 copper mine on Texada Island, British Columbia. 5 A black 

 isotropic mineral occurring in some of the nepheline- 

 syenites of Montreal is also probably an iron garnet. A 

 variety of the mineral having the colour of cinnamon- 

 stone has been met with at a number of localities, including 

 Orford, St. Jerome (in crystalline limestone) and Gren- 

 ville. Fine specimens have also been found in the apatite 

 region of Ottawa County (Wakefield, Range 1, lot 6 ?) and 

 the following description and analysis refer to a specimen 

 from this locality, obtained from the collection of the Peter 



1 Geology of Canada, 1863, pp. 496, 497. 



2 Canadian Naturalist, N. Series, ix., p. 305. 



3 G. F. Kunz, Am. Jour, of Sci. Ser. hi., vol. xxvii., p. 206. 



4 Since this paper was read the Villeneuve garnet has been 

 analysed, and the analysis will be given in a future paper. 



5 G. M. Dawson, Eeport Geol. Survey, 1886, p. 34 B. 



