163 



LODE SPECIMENS. 



It is intended to occupy two upright rectangular cases, facing 

 the entrance with selected specimens illustrating the structure of 

 lodes. A beginning has been made, but many of the specimens 

 now exhibited will, it is hoped, soon he replaced by better ones. 



Section of a Quartz Beef, Post Office Mine, Stuart Town ; Gase 128, 

 a complete section across the reef, showing a " turn." 



Section of a Quartz Beef Mitchell's Creek, Wellington; banded 

 quartz with pyrite and blue dolomite. 



Silver Ore, Terranderie Mine, Upper Burragoraug ; complete 

 section across the lode showing the constituents in alternating 

 bands. 



Ore : — Native silver, blende, mispiclcel. 



Gangue : — Chalyhiie, quartz. 

 Tin Ore, Saxony ; granite traversed by irregular veins of 

 tinstone. 



Tin Ore, Carpet Snake Creek, New England ; a portion of one 

 of the pipes of tin ore — cylindrical areas of granite, impregnated 

 with tinstone. 



Copper Ore, Girilambone ; chlorite-schist, along the separation 

 planes of which the copper ore has been deposited. 



Emerald Matrix, Emmaville ; the emeralds occur principally 

 in claystone, with fluor, topaz, tinstone, &c., closely associated 

 with granite. 



Oj)al in Matrix, Whitecliffs ; showing opalized wood and 

 shells, 



T)iamond-hearin(i Wasli, Bingera. 



A series of specimens from Freiberg, Saxony, showing complete 

 sections across various lodes ; the parallel deposition of ore and 

 gangue minerals is beautifully shown. 



Silver ore, Eockvale, Armidale ; siliceous arsenical pyrites 

 traversed by veins of ruby silver ore {pyrargyrite). 



