274 FANNING. 
mous vein, “a mountain of ore,” but the assays show neither gold 
nor silver. 
On the Napoleon claim, near Malipagao Mountain, 5 kilome- 
ters south of Barlo, a small vein was noted which, however, had 
no appearance of continuity. Assays showed no valuable metals 
except a small percentage of copper. The nearby Union claim 
also showed a few quartz stringers, but values apparently are 
absent. 
North of Barlo, numerous boulders and slabs of chert and 
jasper were found, lying on the surface of the ground. Were 
SKETCH 
Showing Plan of Workings 
and Occurrence of Ore-body 
on the Marshall Group. 
Scale + in = 3 feet. 
KX xa . y 
ieieteeeee Cupriferous Fyrite. 
Basale.- 
Q 
ro 
PA 
SOR 
2 
o 
Fic. 4.—Plan of workings and occurrence of ore-body. 
these boulders in a region of better transportation facilities, 
they would serve very well for tube-mill pebbles in the cyanide 
mills of the Philippines. 
In further prospecting for gold, silver, or copper, the search 
should be made farther south in the Zambales Range along the 
main body of the igneous formation. There the conditions are 
favorable for vein formation, and it is quite probable that future 
work will discover their location. 
Copper.—Copper is found on the Marshall claim at Barlo, on 
the Napoleon claim south of Barlo, and on the Levant claim north 
