34 EECORDS OF THE AUSTRALIAN MUSETTM. 



6. Native bismuth, from Biggenden, Queensland. In calcite, 

 where it occurs mainly between the cleavage planes of the calcite, 

 which is strongly striated like some of the Scandinavian specimens 

 of that mineral. 



7. Native bismuth, in hornblende and quartz ; Mt. Ramsay, 

 Tasmania. 



Bismuth sulphide. 



1. In plates or films with a finely fibrous structure, embedded 

 in rock crystal. The sulphide also occurs in granite made up of a 

 brownish felspar, quartz and decomposed mica. From Kingsgate, 

 Glen Innes, N.S.W. 



2. Massive bismuth sulphide also possessing a fibrous structure, 

 with the native m.etal, from the same place. 



.3. With bismuth carbonate and magnetite, Biggenden, Queens- 

 land. 



Bismuth carbonate. 



1. This is of an ochrey form, associated with bismuth sulphide, 

 quartz, etc. From Kingsgate, Glen Innes, N.S.W. 



2. This specimen is massive, and possesses a platy or laminated 

 structure. 



.3. Gold with bismuth carbonate, Yarrow Creek, N.S.W. 



4. In a fourth specimen, from Biggenden, Queensland, the 

 carbonate occurs with native bismuth in quartz, and is of a 

 greyish colour, instead of the yellowish tint exhibited by the 

 Kingsgate carbonate. 



5. This specimen, from Mt. Shamrock, Queensland, is said to 

 be auriferous. 



6. From Halifax Bay, Queensland. 



Molybdenite (MoS,). 



[Plate viii.] 



Found associated with native bismuth and other minerals, as 

 already mentioned, in quartz. Some of the crystals have been 

 found of very large size, as much as 3^ x o^ inches, and built up 

 to a thickness of 2 or 3 inches (Journ. Roy. Soc. N.S.W. , p. 237, 

 1892) ; the outlines of such, however, are very imperfect, but 

 amongst those in the present collection are some very well 

 developed crystals (see plate viii. which shows the natural size), but 

 of smaller size. The group (fig. 5) is a very interesting one. 

 showing well marked hexagonal forms, with a nearly vertical 



