OKLAHOMA ACADEMY OF SCIENCE 97 



XVIII. PHOSPHATE ROCKS IN OKLAHOMA 



A. C. Shead 



From the Oklahoma Geological Survey. 



Phosphatic material has been reported from time to time in 

 various localities in Oklahoma. It has been said to occur in the 

 Woodford shale, the Sycamore sandstone, near the towns of Dough- 

 erty, Berwyn and Ravia, on a contact of limestone and granite 

 between East and West Timbered Hills and in Atoka county. 

 However, in no instance, had a sample been exhibited or an analysis 

 made of any such material until on August 13, 1921, Mr. A. C. 

 Blair, a farmer on rural route 4, Hastings, Oklahoma, sent in some 

 specimens to tlie writer for identification. No location was given 

 and the situation of the deposit was unknown until the writer 

 visited Mr. Blair in the summer of 1922, obtained the location from 

 him and there collected about ISO pounds of sample and made some 

 observations on the nature of the occurence. 



Fortunately the geology of the region has been minutely worked 

 out by Cc.rroU H. Wegemann.* This author places the region in 

 the Wichita beds of the Permian and gives the following section at 

 the very place where the writer coKected his sample, namely in the 

 NE. cor. SE. :^sec. 33, T. 4S., R, 9W. 



Section of rocks exposed in the SE34sec.33 T. 4S., R. 9W., by 

 Carroll H. Wegemann.f 



Ft. In. 



Sandstone, yellow, altitude of base 966 feet 15 



Shale, red 32 



Sandstone, white 8 



Shale, red, sandy 3 



Sandstone, white 1 



Shale, red 10 



Shale, brown : 1 



Shale, gray, weathers light blue 7 



Shale, red, sand 2 



Sandstone, white __ — 1 



Shale, red, sandy_ 1 



Sandstone, calcareous 3 



Shale, green 4 



Sandstone, dirty yellow, almost white containing many 



large round concretions 9 



Conglomerate, concretionary, dark red and black, con- 

 cretions up to "^ inches in diameter; altitude, 899 ft. 10 

 *Wegemann, Carroll H., Anticliral Structure in parts of Cotton and 

 Jefferson Counties, Oklahoma, U. S. Geol. Survey Bull. 602, 1915, p. 73. 

 tidem. 



