204 



CEMENTS, LIMES, AND PLASTERS. 



TABLE 88. 

 ANALYSES OF NATURAL-CEMENT ROCK, UTICA, ILLINOIS. 



* Far too low : true value is probably over 4 per cent. 



1. F. W. Clarke, analyst. Sample collected by E. C. Eckel. 



2. C. Richardson, analyst. Brickbuilder, vol. 6, p._ 151. July, 1897. 



3. Blaney & Mariner, analysts. "Geology of Illinois", vol. 1, p. 151. 



4. Blaney, analyst. Trans. Am. Inst. Mm. Engrs., vol. 13, p. 180. 



5. Average of preceding four analyses. 



Indiana-Kentucky. The plants of the " Louisville district " are 

 mostly located in Indiana, though one or two mills are in operation 

 on the Kentucky side of the Ohio River. The rock is a fine-grained 

 clayey limestone of Devonian age. In color it varies from light drab to 

 dark or bluish drab when fresh, weathering to a dull buff on long ex- 

 posure. The cement-bed varies from 10 to 16 feet in thickness in the 

 different quarries. As shown by the calculated values of the Cementa- 

 tion Index, the rock varies greatly in composition. 



TABLE 89. 

 ANALYSES OF NATURAL-CEMENT ROCK, LOUISVILLE DISTRICT, IND.-KY. 



Analyses 1-5 inclusive were made by W. A. Noyes. Quoted by Siebenthal, 25th Ann. Rep. 

 Indiana Dept. Geology and Natural Resources, pp. 380-386. 



1. Rock used for "Crown" brand, Hausdale mill, New Albany Cement Company. 



2. "Fern Leaf" brand, Ohio Valley mill, Ohio Valley Cement Company. 



3. "Diamond" brand, Falls City mill, Union Cement and Lime Co. 



4. "Star " brand, Speed mill, Louisville Cement Company. 



5. 'Black Diamond ", Black Diamond mill, Union Cement and Lime Co. 



