VEY COPPER-BEARING ROCKS OF LAKE SUPERIOR PL. x 
SP igt ae ap We 
a ? PS ATS, 
Soacee s VALS Petra OS 
soe ks hem : 
eo Wie cg 
s ¢, ae 
B23 pike. Fs 
# 
DIABASE PORPHYRITES AND ASHBED -DIABASE. 
