84 



The Philippine Journal of Science 



1914 



are to be used is governed largely by commercial considerations ; 

 such as, the ease with which the raw materials may be pulverized, 

 available fuel, location with reference to distributing points, etc. 

 Analysis of the various Philippine materials which may be con- 

 sidered have been segregated by Pratt * as given in Tables II 

 and III. 



DESCRIPTION OF SAMPLES 



1. Miocene limestone from Mount Licos near Camansi coal mine, Danao, 

 Cebu. 



2. Miocene limestone (marble), Romblon, Capiz. 



3. Miocene limestone, Batan, Albay. 



4. Coralline limestone (Pliocene), Cebu, Cebu. 



5. Coralline limestone (Pliocene), Danao, Cebu. 



6. Coralline limestone (Pliocene), Guimaras Island. 



7-14. Coralline marl (Pliocene), Naga, Cebu. Typical of a series of 

 test-hole samples representative of a thickness of from 15 to 30 meters 

 over an area of about 15 hectares. 



15. Bedded marl or chalk (Pliocene), Argao, Cebu. 



16-17. Argillaceous limestone (Miocene) from near Camansi coal mine, 

 Danao, Cebu. 



18. Binangonan limestone, Rizal Province, Luzon. 



Table II. — Analyses of calcareous raw materials for cement. 



Sample 

 No. 



Iron 

 (Si02). (Ab03).{(°^^e^ 



Silica 'Aluminai 



• 1... 



• 2_.. 

 •3--- 

 b4-.. 

 bS... 

 b6... 

 b7... 

 b8-.. 

 b9 — 



blO ... 

 ell... 

 «12... 

 cl3... 

 el4.-. 

 bl6--. 

 • 1«.-. 

 •17... 

 <I18..- 



I 



0.36 

 0.10 

 0.97 

 1.31 

 2.61 

 6.28 I 

 11.12 

 14.10 

 11.57 I 

 12.62 j 

 9.43 j 

 10.28 I 

 8.37 j 

 11.99 I 

 8.93 I 

 29.00 

 24.02 

 1.12 



0.18 



0.17 

 0.56 

 3.90 

 2.23 

 4.33 

 4.28 

 5.77 

 4.62 

 5.75 

 4.02 

 0.63 j 

 0.22 I 

 0.57 ■ 



6.45 

 11.38 j 

 7.49 I 

 0.08 



0.36 



3.28 

 3.25 

 2.90 



5.35 

 2.00 

 0.07 



55.62 

 55.23 

 53.86 

 52.01 

 52.85 

 45.76 

 45.65 

 43.27 

 46.25 

 43.36 

 47.53 

 45.96 

 49.84 

 45.69 

 44.35 

 26.25 

 33.88 

 53.78 



0.45 

 0.19 

 0.63 

 0.88 

 2.70 



1.02 



43.80 

 43.18 



SiOa. 



i 



T : Magne- ' Alkalies -r „„ „„ _. 



^rim sia |(Na20+l.^°^?;°" AkOs+Fea 



<C"0)- (MkO).i K2O). 'K^'t'on- 03. 



I I 



2.70 

 0.65 

 2.12 

 1.19 



1.98 



0.77 



23.00 

 28.25 

 43.31 



2.6 

 2.4 

 2.5 

 2.2 

 2.3 

 2.9 

 2.4 

 3.5 

 1.4 

 1.7 

 2.5 



• Cox, Alvin J., This Jourtial, Sec. A (1909), 4, 211. 

 ■' Analyzed by Forrest B. Beyer, Bureau of Science. 

 ' Analyzed by T. Dar Juan, Bureau of Science. 



" Analyzed by Bureau of Government Laboratories. Sample contains 0.06 per cent FeO 

 not included in FeaOs column. 



'Min. Res. P. I. for 1911, Bur. Sci. (1912), 90. 



