IRON ORE ON CALAMBAYANGA ISLAND, MAMBULAO, 



CAMARINES ^ 



By Wallace E. Pratt 

 (From the Division of Mines, Bureau of Science, Manila, P. I.) 



TWO TEXT FIGURES 

 SITUATION 



The Calambayanga iron-ore deposit is situated on the western 

 part of Calambayanga Island and on the adjacent mainland over 

 an undetermined distance, Calambayanga is the name by which 

 the Coast and Geodetic Survey designates a small island in 

 Mambulao Bay on the north coast of Camarines Province, south- 

 eastern Luzon (fig. 1). The name is more commonly rendered 



CALAMBAYANGA IRON ORE DEPOSITS 

 Relative to Manila 



SCALE 



Fig. 1. Showing situation of Calambayanga Island, Camarines Province. 



Calambayunga by the local inhabitants. Mambulao Bay is 185 

 kilometers (115 miles) in a straight line directly east of Manila. 

 The usual sailing route for steamers encircles southeastern 

 Luzon and is about 900 kilometers (560 miles) long. By com- 

 bined railroad and steamship routes the distance is not much 

 longer than a straight line from Manila to Mambulao. 



Calambayanga Island is a little more than 1,100 meters (0.7 

 mile) in length with a maximum width somewhat greater 



' Received for publication April 23, 1915. 



323 



