THE GEOLOGY OF LUZON, P.I. 59 
been plastered with claims, by speculators and others, totally 
ignorant of the business or who have no money to carry on the 
necessary operations properly. 
With a view to opening up this field, the government has begun 
triangulation in the district and later, this will be followed by 
topographical and geological surveys. 
The oil is very light, having a paraffin base. It has a beautiful, 
clear, cherry color. An analysis is as follows: 
ANALYSIS! OF OIL FROM WELL, NEAR THE VIGO RIVER 
Speciiceravity ol oll atens SCs. 0s tees sc ass 0.845 
HoT tial MOM ine POU, Aroha se ccc Me tictolebete © oii Sisko an acte « s 80 c 
Firstiraction, light.oils, yo =150° Co... seen. es es 27.0 % 
Second fraction, burning oil, 150°-300°............. BO. 75: Yo 
ikesidupum above 300, ©. by dill, 2... as.2.. iss ec 16.25 % 
The formations here are Tertiary sandstone, shales, and lime- 
stones, flexed into a broad gentle anticline, with minor flexures, 
faults, etc., and is more or less intruded by igneous rocks. 
Oil has been reported from other localities in Luzon, the chief 
one being near Aliminos in Pangasinan Province, but examination 
by members of the Division of Mines revealed no trace of oil. 
The formations there are, however, favorable for the accumulation 
of oil. 
GOLD 
In the very earliest records wherein the Island of Luzon is men- 
tioned, there is also a reference to gold. When Magellan reached 
Cebu in 1521, he heard accounts of gold in that part of Luzon, now 
known as Ambos Camarines. 
The natives of that province have a very pretty legend about 
how on a certain time, a golden carabao comes out at night from 
one of the mountains and passes under the sea to a neighboring 
mountain and how the gold deposits are in some way, connected 
with that carabao. 
For centuries, the natives have panned for gold in their crude 
way, not unlike the methods employed by all primitive peoples, and 
they have even gone so far as to construct a crude and very limited 
* Analysis by G. F. Richmond, Bureau of Science. 
