60 



8472, from the Proprietary Mine, is undergoing transformation 

 into carbonate of copper. 



Azurite, hydrated blue carbonate of copper. Azurite crystal- 

 lises in complicated crystals belonging to the monoclinic system. 

 It very commonly occurs in good crystals, often of a tabular 

 habit. Some very beautiful specimens have been found at 

 Block 11. 



5155, a large tabular crystal. 



5480, a group of tabular crystals, eacli radiating approximately 

 from the centre of the group. 



5478, numerous small tabular crystals, quite similar to 5155. 



5479, shows azurite altering into malachite while still retaining 

 its crystalline form (pseudomorplwus replacement). 



A beautiful specimen of azurite from Block II will be found 

 in case 43, near tbe door. 



Malachite, hydrated green carbonate of copper.* Malachite 

 is not so commonly found crystallised as azurite, and none of 

 the specimens exhibited show distinct crystal form. Case 43 

 contains a large block of malachite. 



GhrysocoUa, hydrated silicate of copper. 6698, North Mine, 



MarsTiife, iodide of copper. This is a very rare mineral, sa 

 far only found at Broken Hill, in which copper and iodine are 

 combined together forming salmon-coloured crystals with trian- 

 gular faces. 1057, Proprietary Mine : shows numerous crystals 

 of marshite lining the sides of irregular cavities. 



Nantoclcite, chloride of copper: a waxy white mineral. 

 Unfortunately, nantockite is rapidly acted upon by the atmos- 

 phere and converted into an earthy green compound ; attempts 

 at satisfactorily preserving it have so far failed. 



Afacamite, hydrous chloride and oxide of copper : a pretty 

 dark-green mineral. 1856, a small crystallised specimen. The- 



* Malachite contains a smaller proportion of copper than azurite. 



