GEOLOGY OF QUEENSLAND. 
Plate 63. 
.A. A. Wright litfv. 
DRAWN & PRINTED AT THE SURVEYOR GENERAL'S OFFICE. BRISBANE 
J Ph aebe. Clctrhe &eL 
tachylite. 
Mitchell River, Queensland. 
X 2 75 ( Polajv/ref' only.) 
Fig. 1. 
TOURMALINE IN QUARTZ. 
Cooktown . 
X42 (Polarizer only.) 
Fig. 2. 
