70 



Indiana University Studies 



TABLE No. 2 



Analyses of Fresh Limestone and Its Residual Clay, Staunton, Va. 

 From: Merrill, G. P. 1921. Rocks, Rock- Weathering and Soils, p. 219. 



Constituents 



I 



II 



III 



IV 



V 



Fresh 

 Limestone 



Residual 

 Clay 



Percentage 

 of Loss for 



Entire 



Rock 



of Each 

 Constit- 

 uent 

 Saved 



TjpT»p£iT-» + Q (TO 



of Each 

 Constit- 

 uent 

 Lost 



Silica (SiOo) 



Titanium dioxide (Ti02) 



Alumina (AI2O3) 



Ferric oxide (FesOs) . . . 



Lime (CaO) 



Magnesia (MgO) 



Potash (K,0) 



Soda (NaoO) 



Carbon dioxide (CO 2). . 

 Phosphoric acid (P2O0) 

 Water (H.O) 



Total 



Per cent 



1 7.41 



1.91 

 0.98 

 28.29 

 18.17 

 1.08 

 0.09 

 41.57 

 0.03 

 0.57 



Per cent 



57.57 



20.44 

 7.93 

 0.51 

 1.21 

 4.91 

 0.23 

 0.38 

 0.10 

 6.69 



Per cent 



2.03 



0.00 

 0.29 

 28.24 

 18.06 

 0.62 

 0.07 

 41.53 

 0.02 

 0.55 



Per cent 



72.61 



100.00* 

 75.11 

 0.17 

 0.62 

 42.51 

 23.96 

 0.85 

 31.22 

 Gain 



Per cent 



27.39 



0.00 

 24.89 

 99.83 

 99.38 

 57.49 

 76.04 

 99.15 

 69.78 

 Gain 



100.00 



100.00 



90.86 











*Alumina taken as constant . 



