620 



wells: solubility of calcite in water 



TABLE III 



Calcite Added to a Solution Containing Ca(HC03)2 at 1°C. and Aih Passed 



Tables IV and V are self-explanatory. The results of the in- 

 vestigation are summarized by the curve in Figure 1. 



TABLE IV 

 Calcite Added to Distilled Water at 30°C. and Air Passed 



The geochemical conclusion to be drawn from the curve is, 

 that in solutions freely exposed to the atmosphere solid cal- 

 cium carbonate is considerably more soluble at low temperatures 

 than at higher temperatures. As, however, there are many 

 possibilities of lag in adjustment of the various equilibria in- 

 volved, it is doubtless true that conditions of perfect equilibrium 

 are seldom fully attained in nature. 



Although it would take too much space to point out all the 

 results in nature, of the variation of the solubility with tem- 

 perature, one or two applications of the data may be mentioned. 



