CLAYS OF NEW YORK 61 7 



Kansas 



Most of tlie clay deposits of this state are surface beds of Quat- 

 ernary age. The loess is extensively used in the eastern counties; 

 at Pittsburg a 10 foot bed of Carboniferous shale occurs, which is 

 used for the manufacture of fire brick and paving brick. Fire 

 clays also occur at a number of other localities in association with 

 the coal beds, bu.t they have not been used to any great extent. 



Kentucky 



The state of Kentucky contains numerous clay deposits, many 

 of them of excellent quality. 



They are found in several geologic formations, beginning with 

 the Cretaceous, of western Kentucky, which shows an abundance 

 of brick clay, fire clay and pottery clays. 



In the Cretaceous and the Coal Measures, clay suitable for 

 making vitrified brick as well as fire brick, occurs. 



Fire clay is found in Carter co., where it is now being mined and 

 carried to Louisville for manufacture. Similar clays are known 

 in the counties of Ballard, Muhlenberg, Grayson, Edmonson, 

 Graves, Hickman, Calloway, Fulton, Bell, Boyd. Most of these 

 clays are said to run high in silica and alumina and low in fluxes. 



The clay from Graham station, in Carter co., is of high quality. 

 A flint clay from this locality shows on analysis: 



Silica 49 . Y5 



Alumina , 35.16 



Oxid of iron .30 



Lime .54 



Magnesia .15 



Potash and soda .07 



Water 14 . 03 



This clay is used for making locomotive fire box tiles, cupola 

 tile, glass furnaces, grates, boiler tiles and stove linings. Vitrified 



