76 



Indiana University Studies 



TABLE No. 5 



Analyses of Salem Limestone (Buff) and Residual Claj' of Associated 

 Stylolite-Seam, from Quarry of Consolidated Stone Company, Dark Hollow 

 District, Lawrence County, Ind. 



Constituents 



I 



II 



Ill 



IV 



V 



Fresh 

 Limestone 



Residual 

 Clay 



Percentage 

 of Loss for 



Entire 



Rock 



Percentage 

 of Each 

 Constit- 

 uent 

 Saved 



Percentage 

 of Each 

 Constit- 

 uent 

 Lost 



Silica (SiOa) 



Alumina (AliO.O . . . 

 Ferric oxide (FeoOs) 

 Ferrous oxide (FeO) 

 Ferrous carbonate 

 (FeC03) 



0.89 

 0.20 

 0.04 

 0.41 



0.47 



39.92 

 8.76 



14.411 

 1.01/ 



0.00 

 0.005 



. 0.11 



100.00* 

 97.30 



76.10 



0.0 

 2.7 



23.9 



Lime (CaO) 



Calcium carbonate 

 (CaCOs) 



53.28 



95.14 



15.68 



49.80 



6.60 



93.4 



Magnesia (MgO)... 

 Magnesium carbo- 

 nate (MgCOg) 



0.54 



1.13 



0.08 



0.52 



3.30 



96.7 



Potash (K2O). . . .\ 

 Soda (Na20) / 

 Total silicates and 

 oxides not com- 

 bined with C0.> 



0.07 



1.32 



1.56 



65.74 



0.036 



49.50 



51.5 



Carbon dioxide 

 (CO2) 



Volatile and com- 

 bustible matter, 

 less CO., 



Total 



42.63 

 0.43 0.43 



9.52 



7.94 7.94 



40.40 

 0.26 



4.90 

 39.00 



95.1 

 61.0 



98.49 98.49 



98.88 



91.135 













*SiIica taken as constant. 



Column I. Fresh Salem limestone (buff variety). 



II. Brown residual clay of stylolite-seam associated with I. 

 Analyses by Kenneth W. Ray, Indiana University, 1921. 

 Columns III, IV, V calculated by the writer. 



