EXPLANATION nF I'LATE VII. 



Figs. 1, -1. Cassiteiite, Loug Gully, near Tirigba, N.S.Wales ; tig. 2 

 twinned on e. 



Fig. 8. Cassiterite, Pilbara, Western Australia ; doublet on e. 



Figs. 4, 5. Cassiterite, Tingha (?), N.S.Wales: triplet on e. 



Forms:— c (001), a (100), u, (110), /■■ (840), r (230), 

 M120), -(Oil),. (Ill), :(231), / (188). 



Fig. 6. Cuprite, Broken Hill, N.S.Wales. 



Forms:—/ (110), .- (HI), n (112). 



