704 





NE 





MgO 



SO3 





.86 



1.25 





2.79 



l.Yl 





1.81 



1.24 





1.45 



1.1 





1.68 . 



1.5 





2.48 



1.36 



NEW YOKK STATE MUSEUM 



MgO 



S03 



2.84 



1.53 



1.16 



2.71 



2.73 



1.51 



1.85 



1.39 



1.32 



1.32 



American raw materials used in tlie manufacture of Portland 

 cement also show a great variation in tlieir composition^ as will 

 be seen from tlie following table of analyses taken in part from 

 Mineral industry j, 6 : 97, and from the volumes on mineral re- 

 sources in the annual reports of the director of United States 

 geological survey. 



Analyses of raw materials 





SiO, 



AI2O3 



^^2^3 



CaCO^ 







'caO 



MgCOg 



MgO 



CaSO 



4 



SO3 



Ins. 



H3O& 

 Org. 



Lehiihval. Pa. cem.rock 

 Lehip:li val. Pa. cem. rock 

 L(;hig:h val. Pa limestone 



14.68 

 15.4 



5.87 

 13.97 



4.14 

 14.16 



3.3 

 55.27 

 .26 

 40 48 



5.32 

 4.26 



1.12 

 1 38 



69.26 



74.66 



88 



74.1 



90.47 



73.96 



"94!39 

 25.8 

 92.7 



' "goieef 



' 9^!72 



52! 15 

 5.84 



".'9* 



"iei 



3.67 



2 66 



4 



2.04 



1 



3.13 



"""38 

 .99 

 .53 



' * *tr.* * 



2.29 

 .86 



1.686 

 1.88& 



1.59 



5.07 1.88 



.21 1.77 



6.64 



1.3 



28.15 



.1 

 20.95 

 1.7-2 







— c 



Lehigh val. Pa eem.mixr 

 Lawrence co. Pa.limes'ne 











1.62b 











2.03& 



Warren co.N. J. cem.mixt. 

 Glens Falls limestone . . . 

 frlens Falls clav 



*i!58 

 2.25 



. i 



2.06 



".'3" 



.12 



'".eh 

 .49 



'1.28 



a 



'l'28 



c 



8.37 



Warner marl 



4.64c 



Warnpr clav ............ 



8.. 50c 



RnTtfliislcv marl .......... 



1.13c 



Sanduskv clav 



64.7 

 1.65 



62.1 

 2.15 

 8.2 



57.98 

 4.42 

 6.09 



53.3 



65.12 

 8.2 



54.3 

 .49 



55 82 



11.9 



20 "09 



9.9 



.81 

 7 81 



11.90c 



Bronson marl 



5.. 59c 



Rrormon clav 



.96 

 *i!83 







7.90c 



Yankton chalk ..••.••••• 



2.72 

 7.07 



c 



Yankton chalk . . . • • 



83.59 



c 



Yankton clay 



18.26 



2.21 



3.52 



23.29 



19 05 



4..57 

 1.03 

 1.2 

 9.52 

 7 fifi 



"95 29 

 87.93 



"ssiie 



" '97. "63 



"m.eh 

 88.49 



1.75 



12.08c 

 d 



A rl;flnc:fj<5 pTirIIt . - 







1.06 



1.49 



,31 



2.57 



' * .'44 



.78 









d 



Arl^-n^vfl^^ olav ............. 



.36 

 .84 



'3!29 



'"7 



54*45 

 2.29 



""i!78 

 ""65 



"'i.'82 



2.71 









5.16rf 



A rU j^nc;fl<5 pIrv ......... 









6 12d 



La Salie 111. limestone. . . 



La Salle 111. clay 



Litchfield Ky. limestone 



Litchfield Ky . clay 



Harpers . marl 



Syracuse Ind. marl 



1.3 



19 33 fi K7 



■ ■ ' .'45 

 1.58 



2.36 

 .34 







tr. 

 19.77 

 1.15 

 1.21 



.22 

 6.19 













7.28 



1 78 



38.74 



5.43 



6.54 

 4.23 



Wellston 0. limestone . . 

 t\7^pl|afnn O clfl.v... ... 



3.53 



69.49 



1.14 

 16 42 



e 













1 









a 002 46.98. 6 Pa. geol. sur. 

 eng. e Loss on ign. 



C Mfr's anal. d Branner. Proc. Am. inst. mining. 



