MIN'KKALOGICAL NOTKS : NO. V. AN'DERSOX. 



407 



presents a form different from those described above ; it is a 

 fourling on the common \a,\v, two segments being about equal in 

 size, the other two much smaller. 



Stantiiorpe, Queensland. 



(Plate Ixxv., fig. 4). 



The figure is drawn from one of several small crystals partly 

 embedded in a decomposed rock of indeterminate nature carrying 

 crystals of quartz. It measures only 2 mm. approximately in 

 length, but its faces ai-e bright and the signals good. It is 

 twinned on e. 



The followins; forms and measurements were obtained : 



(Plate 



CERUSSITE. 

 Broken Hill, New South Wales. 

 Ixxvi., figs. 1, 2, 3 : Plate Ixxvii., figs. 1, 2, 3). 



The mines of Broken Hill have yielded some magnificent ex- 

 amples of crystallised cerussite ; the form and appearance is so 

 characteristic that Broken Hill cerussite can generally be recog- 

 nised at a glance. It occurs as long prismatic crystals, often 

 coated with rounded, tapering crystals of smithsonite (carbonate 

 of zinc), or again covered with brilliant anglesite. Frequently it 



