106 UNIVERSITY OF MISSOURI STUDIES 



Higher prices, whether they come thru a growing scarcity of 

 the mineral, thru its increased use in the chemical industries, or 

 thru the development of unsuspected uses, will cause more and 

 more attention to be paid to deep mining, especially on the veins. 

 This should also result in an improved grade of material. Much 

 could be done to improve the present methods of digging. It is 

 likely that only the larger vein and cave deposits will prove work- 

 able, unless the price is high, altho associated metallic sulfides 

 may also aid in making the smaller veins workable. At present, 

 most of the barite produced outside of Missouri comes from 

 veins and not from residual materials. 



The Hazel Creek, the Richwoods, and the Wilson Creek 

 areas all contain very valuable deposits awaiting development. 

 In the Central district, there seems to be a probability that barite 

 will be saved as a by-product in the deep mining of zinc. Much 

 good barite will be obtained from the circles and residual mate- 

 rial there also. 



On the whole it seems that, altho the enormously rich resi- 

 dual deposits which have been accumulating for a great period 

 are only partially exhausted, the best areas are being rapidly 

 worked out and search will go downward to obtain barite from 

 the veins. At the same time, outlying areas may be expected to 

 show an active production. The state, therefore, will probably 

 continue to make a high production of barite for some time to 

 come. 



BIBLIOGRAPHY 



The following bibliography on barite is not exhaustive, but 

 it includes those references used in this report, as well as some 

 more general references to the geologic features of the region 

 studied. 

 Bain, H. F. Zinc and lead deposits of the upper Mississippi 



valley. U. S. G. S. Bull. 294, p. 52. 

 Ball and Smith. Geology of Miller County, Mo. Bureau of 



Geol. & Mines, vol. 1, pp. 42, 115. 1903. 

 Beck, R, The nature of ore deposits, p. 550. 

 BiscHOF, GusTAV. Chcm. Phy. Geol. 3 vols. Edition 1854. 



