IX. A. 1 West and Cox: Philippine Cement Raw Materials 85 



DESCRIPTION OF SAMPLES 



I. Shale from Batan Island. 



2-5. Shale from Batan Island. Samples from drilled test holes. 



6. Shale from near Camansi Coal Mine, Danao, Cebu. 



7. Shale from near Camansi Coal Mine, Danao, Cebu. 



8. Shale from Tigbauan, Iloilo. 



9. Shale from Cantaingan, Masbate. 



10. Alluvial clay from Malinta, Bulacan. 



II. Clay from Binangonan, Rizal. 



12. Alluvial clay from Pasig River near Manila. 



13. Clay from near Camansi Coal Mine, Danao, Cebu. 



14. Alluvial clay from Pandan River, Naga, Cebu. Representative of 

 drilled test-hole samples. 



15. Alluvial clay from mangrove sw^amp, Loay, Bohol. Sample from 

 drilled hole. 



16. Volcanic tuff. From vicinity of Manila. 



17. Schist from Romblon. 



18-20. Graywacke, Naga, Cebu. Typical of a series of samples from 

 drilled test holes over an area of 16 hectares. 

 21. Rhyolite from Cebu. 



Table III. — Analysis of argillaceous raw material for Portland cement. 



Sample 

 No. 



Silica 



(Si02). 



Alu- 

 mina 

 (AI2O3). 



Iron 



oxide 



(Fe203) . 



Lime 

 (CaO). 



Magne- 

 sia. 

 (MgO). 



Alkalies 



(Na20+ 



K2O). 



Loss on 

 ignition. 



Si02. 



Al203+Fe2 

 Os. 



« 1 

 b 2 

 " 3 

 b 4 

 " 5 

 a 6 

 d 7 



d 8 

 d 9 



• 10 



• 11 



e 12 



» 13 

 14 

 d 15 

 ' 16 

 » 17 

 " 18 

 " 19 

 " 20 

 e 21 



35.02 

 52.84 

 46.31 

 51.88 

 55.97 

 63.25 

 33.74 

 37.84 

 49.08 

 47.77 

 50.81 

 52.83 

 60.17 

 60.60 

 37.13 

 59.27 

 80.12 

 68.10 

 66.14 

 69.16 

 76.16 



13.98 

 28 



6.01 

 60 



17.44 

 1.98 



2.84 

 1.82 



1.97 

 3.10 



17.50 



1.8 

 1.9 

 1.6 

 2.0 

 1.9 

 1.6 

 2.0 

 1.8 

 1.8 

 1.8 

 1.8 

 1.8 

 2.2 

 2.3 

 1.9 

 2.7 

 5.8 

 4.0 

 4.8 

 4.9 

 5.0 



26.68 

 26.13 

 30.09 

 24. 11 9. 03 

 16.48 

 21.07 

 27.2,<! 





















0.80 



2.22 





8.72 





















c 18.73 

 20.54 



21. 01 

 22.65 



26 



7.19 

 7.37 

 8.40 

 4.66 

 50 



1.78 

 0.91 

 4.04 

 0.31 

 2.00 



2.06 

 1.05 

 2.58 

 1.86 



L86 



13.84 

 8.14 

 9.08 

 6.35 

 8.45 



2.68 





20,04 







17.06 

 12.56 

 14.50 

 12.75 

 14 



5.06 

 1.15 

 2. 70 

 0.96 



3.37 

 0.12 

 3.07 

 3.43 



1.52 

 0.48 

 0.94 

 0. ."iS 



6.12 

 3.69 



6.42 

 1.94 







1 







14. 93 n 5!7 



1.40 1 24 



5.65 















" Cox, Alvin J., This Journal, See. A (1909) 4, 211. 



•• Analyzed by T. Dar Juan. 



' Includes titanium oxide (TiOa). 



* Analyzed by Beyer. 



• Cox, Alvin J., This Journal, Sec. A (1907), 2, 413. 

 »Cox, Alvin J., This Journal, Sec. A (1908), 3, 404. 



« FerBUBon, Henry G., This Journal, Sec. A (1907), 2, 407. 



