X, A, 5 Pratt and Lednicky: Iron Ore in Surigao 



Table II. — Iron content of Surigao iron ore." 



341 



Drill hole. 



No. Depth. 



Description of sample. 



Loss on 

 ignition; 

 ore dried 

 at 110° C. 



Metallic 

 iron in 

 dry ore. 



Metallic 



iron in 



sintered 



ore.b 



16 



Maters. 



12 



20 



8 



36 



9 



17 



12 



29 



3 



33 



9 



72 



11 



76 



6 



79 



9 



86 



6 



Western edge of deposit south of Taganito: Surface 



ore 



Central portion of deposit inland from Hinadkaban 

 Bay: 



Depth— 



0-3 meters 



3-6 meters 



6-9 meters 



Southern portion of deposit; mainland nearDahikan 

 Bay: 



Depth— 



0-3 meters 



0-3 meters 



3-6 meters 



6-9 meters 



0-3 meters 



3-6 meters 



6-9 meters 



9-12 meters 



0-3 meters 



3-6 meters 



Surface 



Southern portion of deposit; peninsula near Dahikan 

 Bay: 



Depth— 



0-3 meters 



3-6 meters 



6-9 meters 



9-12 meters 



0-3 meters 



0-3 meters 



3-6 meters 



6-9 meters 



Northern part of ore deposit; inland from Taganito: 

 Depth— 



0-3 meters 



3-6 meters 



6-9 meters 



0-3 meters 



0-3 meters 



3-6 meters 



6-9 meters 



3-6 meters 



Average . 



Per cent. 



14.76 



12.50 

 12.70 

 12.20 



12.20 

 12.50 

 11.08 

 11.80 

 13.34 

 13.49 

 12.02 

 12.13 

 11.50 

 10.00 

 14.10 



13.05 

 11.04 

 10.57 

 11.93 

 13.30 

 14.25 

 14.45 

 13.15 



14.16 

 12.41 

 13.60 

 13.60 

 15.34 

 14.00 

 13.67 

 14.40 



12.87 



Per cent. 

 53.40 



47.30 

 42.56 

 29.59 



31.00 

 47.30 

 55.75 

 42.56 

 49.81 

 50.89 

 54.36 

 51.96 

 54.50 

 49.95 

 46.79 



45.64 

 37.16 

 48.01 

 54.86 

 44.45 

 48.30 

 49.10 

 51.40 



45.64 

 45.63 

 42.28 

 52.20 

 47.39 

 48.16 

 51.39 

 49.98 



47.40 



Per cent. 

 60.5 



52.2 

 47.0 

 32.5 



33.0 

 52.2 

 60.5 

 46.6 

 55.7 

 56.8 

 59.7 

 57.2 

 59.5 

 53.6 

 52.5 



60.7 

 40.4 

 51.9 

 60.2 

 49.7 

 54.4 

 55.4 

 57.3 



51.4 

 50.3 

 47.3 

 68.3 

 54.0 

 54.0 

 57.5 

 55.8 



52.5 



" Analyses by T. Dar Juan, A. S. Arguelles, and Francisco Pefia, chemists. Bureau of Science. 

 •> Calculated on a basis of 3.5 per cent reabsorbed moisture. 



