412 



RECORDS OF THE AUSTRALIAN MUSEUM. 



Washi\(;ton Extended Mine, White River, Tasmania. 



(Plate Ixxvi., fig. 4). 



This is represented in our collection by one specimen in which 

 small crystals of cerussite occur in cavities in galena coated with 

 yellow limonite ; in habit it is tabular on h, which is slightly 

 striated parallel to prism and brachy-dome intersections. The 

 angles are tabulated below : 



Comet Mine, Dundas, Tasmania. 



(Plate Ixxvi., fig. 5). 



The crystals, which occur on a matrix of galena and powdery 

 limonite, are thin tabular on h and twinned on m ; the figured 

 crystal is a trilling resembling the cerussite of the Magnet Mine^ 

 The two crystals twinned to that in the conventional position are 

 small in comparison and scarcely penetrate the larger. The 

 measured angles agree fairly well with the calculated values. 



Anderson — Eec. Austr. Mns., vi., 2, 1905, p. 93, pi. xx., f. 1-3. 



