PAET II. 



* , * 



THE MINERALS OF CENTRAL CANADA. 



The preceding sub-division of this work is of a purely introductory 

 character, explanatory of the more common properties possessed by 

 minerals in general, and of certain technical terms employed in mine- 

 ralogical definitions. In the present Part, the Minerals of Central 

 Canada, comprising the Provinces of Ontario and Quebec, are classi- 

 fied, and described. In these descriptions, in accordance with the 

 stated plan of the work, minute chemical and crystallographic details 

 are purposely omitted : details of this kind being obviously out of 

 place in a work intended for general use. Localities also except in a 

 few instances, are only stated generally, i. e. without precise reference 

 to lots and concessions ; but an attempt is made in all cases to give 

 the localities in systematic order, based, as much as possible, on geo- 

 logical relations. 



The classification, adopted in the work, is founded essentially on 

 composition, as being the most convenient for practical reference. It 

 is preceded, however, by an Analytical Key, by means of which 

 the name and place of any mineral described under the Classification 

 proper, may be easily arrived at ; and a Simplified Key or Tabular 

 Arrangement, including minerals of common occurence only, is also 

 given for the same purpose. The method of application is explained 

 fully at the end of tha principal key : a certain knowledge of techni- 

 cal terms, and of the more common properties of minerals as explained 

 in the preceding division of the work, being of course supposed on 

 the part of the reader. 



ANALYTICAL KEY, 



By which the name of any Canadian Mineral may be easily ascertained* 



NOTE In this Key, minerals of common or extensive occurrence are denoted by the name 



being- printed in large capitals, and minerals of tolerably common occurence, by the use of 



* As regards the determination of minerals generally, the Reader may consult the Mineral 

 Tables attached to the author's Bloivpipe Practice. Also the author's Mineral Indicator 

 Copr, CLARK & Co., Toronto). 

 5 



