82 UNIVERSITY OF MISSOURI STUDIES 



fact of the great insolubility of the former, so that when it is pos- 

 sible for either salt to form it is always the sulfate which forms. 



The fact that barium chloride is very soluble in water prob- 

 ably explains the presence of barium in strongly saline solutions. 

 It is possible for barium to be transported in such waters in the 

 presence of sulfates as is shown by the analyses of brines. 

 Clarke^ cites an analysis of a brine from a well at Pomeroy, Ohio, 

 which contains .21 per cent of Ba. Other analyses of chloride 

 brines are given in the same bulletin on pages 184 and 186. It is 

 interesting to note the percentages of barium in these waters. 



SO4 78 12 02 



Ba 01 08 42 76 



Three chloride waters from New York, two from the Sara- 

 toga Springs and one from an artesian well at Ballston, contain 

 small amounts of barium, as is shown by the partial quotation of 

 the analyses below. These waters contain also a large amount 

 of CO2. Numbers one and two are from Saratoga and number 

 three is from the well at Ballston. 



1 2 3 



CI 42.00 42.42 41.95 



SO4 08 04 



CO3 18.59 19.28 18.66 



Ba 09 0.12 06 



Bischof'' gives analyses of three brines from deep wells 

 along the Alleghany River, which show from .91 to 1.25 per cent 

 BaClg. P. Schweitzer found barium sulfate in a sulfate water 

 from Moberly, Missouri, and also from a chloride water from 

 Saline County, Missouri. 



These analyses have been given to show that a few mineral 

 waters contain barium and that it is most commonly found in 

 chloride waters. Acid, carbonate, or sulfate waters rarely, if 

 ever, contain any barium. 



The great insolubility of barite and witherite, and their 

 scarcity in all types of sedimentary rocks, especially carbonate 

 rocks, makes it extremely improbable that barium could be ob- 



'Clarke, F. W., Bull. 616, U. S. G. S., p. 182. 



*Bischof, Gustave, Chem. and Phy. Geo!., vol. 1, p. 377. 1855. 



