WEST VIRGINIA GEOLOGICAL SURVEY. 139 



Coal Exposure No. 200 on Map II. 



On Cedar Creek, 2.5 miles southwest of Glenville; Little Clarks- 

 burg Coal; elevation, 735' B. 



Ft. In. 



Sandstone, massive, Connellsville 



Concealed 5 



Coal 10 



Shale, gray 5 



At the Marcellus Stump Prospect, No. 201 on Map II, on 

 Right Fork of Steer Creek, 0.8 mile southeast of Stumptown, 

 the place had fallen shut but the coal was reported 0' 8" thick 

 by Mr. Stump. Its elevation there is 770' B., being 90 feet 

 below the Pittsburgh Coal bench. 



THE CLARKSBURG FIRE CLAY SHALE. 



The Clarksburg Fire Clay Shale of Hennen 6 , belonging 

 just under the Little Clarksburg Coal, is of scanty occur- 

 rence in the two counties, being too thin in most places to 

 have any economic value. In Gilnier, at the northeast edge 

 of Glenville, Elmore Wolfe reports the occurrence of a clay 

 2 to 5 feet thick, found in the bottom of his Avater well, 18 

 to 20 feet under ground. It would have an elevation of 815' 

 B.. and would represent the Clarksburg Clay. A sample fur- 

 nished by Mr. Wolfe appeared soft and plastic, having a pink- 

 ish gray color. Its chemical composition, as reported by 



Krak, is as follows : 



Per cent. 



Silica (SiO,) 61.15 



Ferric Iron (Fe,O 3 ) 4 . 63 



Alumina ( A1.,O 3 ) 20 : 19 



Lime (CaO) 0.63 



Magnesia (MgO) 1.08 



Potassium Oxide (K..O) 3.20 



Sodium Oxide (Na,,O) . 51 



Titanium Oxide (TiO 2 ) 0.61 



Phosphoric Acid (P 3 O,) 0.18 



Moisture 1-40 



Loss on ignition 6.23 



Total . 99-81 



"Ray V. Hennen, Doddridge-Harrison Report, W. Va. G. S., p. 236; 

 1912. 



