151' 



rJiomhic dodecaTieclron, often modified by faces of icositetralieclron. 

 Very often, however, garnet occurs massive. 



A 



Garnet ci'ystals. 



A. Rhombic dodecahedron. 



B. Rhombic dodccihedron with icositetrahedron. 



Garnets are classified by means of their chemical composition 

 into lime-alumina, iron-lime, and other groups, but the speci- 

 mens from New South "Wales have not yet been investigated to 

 any extent. Many localities in ISTew South Wales are repre- 

 sented. 



9192, Broken Hill ; pretty pink garnets in schist. In case 

 145 a larger specimen will be found. 



5923, shows muscovite (mica) interpenetrating garnet. 



7642, Grundagai ; a massive form of lime-alumina garnet. 



4041, Macleay Eiver ; a crystal {rliomlic dodecahedron) with 

 very sharp edges. 



9500, "Willi Willi, Macleay Eiver. 



6314, Broken Hill ; in the sulphide ore. 



7004, Broken Hill ; a large crystal removed from within a 

 mass of galena. 



3746, Duckmaloi, near Oberon, with woUastonite. Both 

 minerals are the result of contact-metamorphism (see page 147). 



5818, Tarrangobilly ; green variety. 



5964, Tarrangobilly ; a characteristic crystal. 



5798, Turon ; lime-alumina garnet. 



