This paper aims to define the geological
environment, time of formation, nature
and physico-chemical conditions of
formation of the porphyry copper
deposits in Baguio District, Luzon,
Philippines that are relevant to the
search for mineral deposits.
***A summary of the
authorís dissertation accepted on March
24, 1978 as a partial
requirement for the Degree of Doctor of
Science at the Institute of Petrology,
ogy and Economic Geology, Faculty of
Science, Tohoku University, Sendai,
(Published with permission of the
Director, Philippine Bureau of Mines).