ToTiriiialina 



152 



9330, Eeadle's Farm, Moonbi ; small crystals in calcite. 



10099, Euby Hill, Bingera; pyrope (alumina-iron-garnet) ^ 

 included in basalt; a polished slice. Eound the garnet, wliich 

 takes a good polish, and is almost of gem quality, will be noticed 

 a rim of alteration products, known as l-eltjpldte. 



Topazolite, a variety of iron-lime garnet ; Canada. 



Spessartife, manganese-alumina garnet ; Virginia. 



Grossularite, lime-alumina garnet ; Russia, Maine. 



Ouvarovite,Y\vcie-(i\\vo\n.Q garnet; Canada, Russia. 



Jolinstonotite, manganese-magnesia-iron-lime garnet, Tasmania, 



3423, Mexico ; a pretty rose-coloured garnet in limestone ; 

 polished. 



In case 105, is a largo slab of mica-schist, showing garnets, 

 from the well-know'n locality, Fort Wrangel, in Alaska. 



A silicate of varying composition, always containing a 

 considerable proportion of boracic acid. It is equal to or above 

 quartz in hardness, usually jet black in colour, and occurs 

 characteristically in granite as essentially three-sided elongated 

 prisms,* or in bunches of radiating needles. Xot uncommonly 

 found in quartz. A mineral that causes a good deal of perplexity 

 to miners unfamiliar with it. 



Muhellite, pink tourmaline ; Russia ; California. 



It has been found in considerable quantities at the Californian 

 locality in a rock consisting of quartz and lithia-mica. A 

 beautiful specimen of this will be found in 119. 



Brown Tourmaline, California. 



Zeuxite, a green variety from Mount BischofF, Tasmania. 



Sclwrl, black tourmaline, the common variety. This has been 

 found in many of the granite areas of ]N"ew South Wales. A 

 few are selected for exhibition. 



Cooma, Junee, Mount Gipps, Oban, "Wyalong, Temora, 

 TJralla, Glen Innes, County Selwyn, Broken Hill, Bendemeer, 

 Barraba, Deepwater. 



* A good crj stal of tourmaline will be found in case 33. 



