Strontianite. 



Witherite. 



Dolomite. 



Case 102. 



Magnesite. 



Case 102. 



Fluorite. 



158 



esMbited are from the Eichmond basalt quarries, Melbourne, 

 and from the Limestone Caves (see also case 43). 



There are also forms that may be regarded as aragonite from 

 Broken Hill, Murrumbidgee, and New England. 



Carbonate of strontia. Scotland. Not known in New South 

 "Wales. 



Carbonate of baryta. Northumberland (Eng.), where it is 

 mined. A beautiful crystallized specimen from here is exhibited 

 in case 105. Not known in New South "Wales. 



Carbonate of lime and magnesia. Used as a source of salts 

 of magnesia. Wellington, Gundagai. 



A blue variety from Woodlands, Yictoria, in Tasmania, and 

 (case 128) in lode quartz, from the Mitchell's Creek Mine, 

 will be noticed. 



Carbonate of magnesia. A dull white massive mineral used in 

 the manufacture of Epsom salts. Commonly found as nodules. 

 Harder and heavier than calcite, from which it and most other 

 carbonates also differ in effervescing only in warm acid. Of com- 

 mercial value when pure and in quantity, as it is in Asia Minor 

 and elsewhere. Magnesite occurs in small quantities at many 

 localities in NeAV South Wales, either associated with serpentine, 

 or in alluvial deposits or mineral lodes, but not in deposits of 

 commercial value. Bingera, Tamworth, &c., &c. 



Fistomesite. 6034, a variety containing carbonate of iron, Bal- 

 hannah Mine, South Australia ; it is auriferous and associated 

 with bismuthite. 



GROUP VII. 



Fluorides and Phosphates. 



Fluoride of calcium : a not uncommon gangue mineral 

 occurring abundantly in some mines. It can generally be 

 recognised by means of the perfectly formed glassy cubes in 

 which it is generally crystallized. The variety of colour displayed 



