183 



compound mineral together with Quartz forms a granite vein, which 

 covers a larae area, although the ]jroportion of the Perthite to the 

 rock mass would not be very great. Its colour varies from a light flesh- 

 red to a dark brown and it wiil at times cut into very handsome gem 

 stones, the surfaces of which are brilliant with golden reflections. Mr. 

 George F. Kunz the author of " Precious Stones in America," says : 

 " Perthite forms a very curious and rich coloured gem, with its bright 

 Aventurine reflections.' This mineral has not been observed at any 

 other locality than that given above. 



Albite has been found at several places in Canada, but there is 

 reason to suppose it has a much wider distribution than we are aware 

 of at present. In the townships of Wakefield, Hull and Villeneuve, in 

 Quebec, and Drummond and Bathurst in Ontario, this mineral oc- 

 curs with broad and striated cleavages, the surfaces of which are beau- 

 tifully chatoyant with such colours as blue, green and yellow and will 

 rarely cut into fine Moonstones with pearly and bluish reflections, and 

 first-class stones will coinpare with those from St. Gothard, 



Feristerite is a name given to the o[jalescent Albite at Bathurst, 

 where it occurs associated with Quartz. 'I'he mineral from this locality 

 although pretty with its bluish reflections is nevertheless marred by 

 being generally stained by the oxidation of the Pyrites that is associated 

 with it. 



Oit^oclase — This mineral constitutes the Ceylon Moonstone, and 

 although a vein of this material occurs in the Townshio of Hull it has 

 not proved to be of gem quality. 



Su7istone, possibly Oligoclase associated with Titaniferous Iron 

 Ore, was b: ought in by a farmer from the Gaiineau region, 



Labradorite — Although abundant throughout Northeastern Canada, 

 as a constituent of the Anorthosite rocks, and at times affording large 

 cleavages, is neverthele s devoid of those bright coloured reflections 

 which so characterize those specimens bi ought from Paul's Island, 

 Labrador. Seme specimens from the reighbourhood of Perth, gave 

 fiery red reflections, but not so vividly as those from Labrador, which 

 at times are entirely blue, at others green, sometimes the two colours 

 are interblendcd with the addition of purple and bronze, but the rarest 



