282 



RECORDS OF THE AUSTRALIAN MUSEUM. 



CERUSSITE. 



Tolwong Mine, near Marulan, N. S. Walks. 



(Plate lxxxi., fig. 6.) 



The hand specimen consists of stout prismatic cerussite elongated 

 parallel to the a axis, accompanied by galena, sideiite, and pyrite. 

 TJie cerussite is coated with galena so that the crystals are quite 

 dark and opaque ; they preserve their polish, however, and reflect 

 well. 



MEAN ANGLES. 



