764 THE TIN-DEPOSITS OF NEW ENGLAND, N.S.W , I., 



Molybdenite occurs rather less abundantly than wolframite, and 

 is to be found in small hexagonal flakes throughout the more 

 siliceous parts of the veins. 



Felspar' is notably absent, except in close proximity to the 

 ^dges of the vein, and even here it can only be recognised micro- 

 scopically. 



Beryl was reported by Mr. Ulrich* who states the following: 

 ** I discovered lumps of a ferruginous clayey substance full of thin 

 light green and yellow hexagonal prisms of beryl associated with 

 larger quartz-crystals. I also found beryl on crystallised cassi- 

 terite specimens in fragile prisms generally not thicker than a 

 stout pin and up to an inch in length interlaced between the 

 tin-ore crystals." Unfortunately, although I found abundant 

 vughs containing " a ferruginous clayey substance," I did not see 

 anything to correspond with Mr. Ulrich's discovery, 



Fiuorite occurs very sparingly, and has only been recognised 

 microscopically. 



Both native bismuth and bismite are rather sparingly present in 

 the veins. 



Class ii. — Quartzose. 



This class is merely an extreme case of the previous one, in 

 which the central quartz is not developed. The general remarks 

 with regard to the .size and continuity of the veins of Class i., also 

 upply to this type of vein. A good example of this class is a reef 

 situated on the south bank of the Macintyre River, near Elsmore. 

 This was opened as a molybdenite mine. The molybdenite occurs 

 i-ather plentifully throughout the reef, in small hexagonal flakes, 

 the largest being rather smaller than a shilling. The quartz is 

 translucent, and contains a small amount of a greenish-grey scaly 

 mica, similar to that previously mentioned. Vughs occur plenti- 

 fully, and these are frequently tilled with mica and hydrous oxides 

 of iron. The reef is about 18 inches wide, is vertical, and has 

 been sunk on for about 12 feet. 



* L(K\ cit. 



