191 



Flanking this vein is a less altered pyritous substance enclosing black 

 shining crystals cf tourmaline. 



The vai'iety hog iron ore is found in several places in Templeton 

 and Hull. But the area covered by this mineral has yet to be ascer- 

 tained. 



We noif come to the two sulphides of iron, pyrrhotlte and pyrite. 

 The former, by far the more uncommon, occurs in small veins and 

 masses in some of the apatite mines. The latter is much more abun- 

 dant, and is rather an objectionable than a desirable substance. 



It frequently permeates apatite deposits,, often to such extent, as 

 to detract greatly from the commercial value of the latter. In some of 

 the apatiie mines, large bedded masses of this mineral occui-, enclosing 

 various minerals, the most noticeable of which are crystals of apatite 

 nd scapolite with tlieir angles more or less rovmded. At other times 

 it is evenly distiibuted through large deposits of apatite. To enumer- 

 ate all the physical characters exhibited by this mineral would be both 

 endless and useless. I shall therefore select from a few places, this 

 mineral that offers various physical cliaracters. At Haldane's mine in 

 Wakefield, large bedded masses of pyrites were penetrated in sinking 

 their deep pit, often enclosing rounded green crystals of apatite, and a 

 rusty brown scapolite. During the progress of oxiJation of the pyrites, 

 the latter mineral (scapolite) only, is affected, the apatite in all cases 

 retaining its original color, even when [cirtly liberated by the disinte- 

 gration of the pyrites. Tliis locality has afforded from time to time, 

 fine brass yellow crystals of this mineral, exhibiting such faces as the 

 cube, octahedron, dodecahedron and other modified forms. 



At McBryde's Mine, in the same township, this mineral is found 

 associated with blende, galena, garnet, (fee, in bronze-brown masses, 

 which might, at first glance, be taken for pyrrhotite, but which, however, 

 is not magnetic. 



At the Jackson Rae ]Mine in Tem])leton, large quantities of this 

 mineral have been extracted, graduating in color from a brass-yellow to 

 almost grey. Sometimes thin coatings entirely envelope apatite crys- 

 tals. 



Molybdenum. — The sul[)hide of this metal (molybdenite) has 

 been detached in small foliated masses at McBryde's Mine in Wake- 



