RUSK COUNTY. 



257 



About eight miles west of Henderson, on the same road, there is a pocket 

 deposit of dark clay, slightly magnesian, overlaid by mottled red and gray 

 clay and underlaid by a bed of soft plastic clay to bottom of gully. 



About a quarter of a mile northwest of Henderson, on the Belleview road, 

 there is a bed of gray plastic clay fifteen feet to bed of branch. 



ANALYSES OF CLAYS. 



No. 



d 



o 



a 



a 



3 

 < 



0> 



"fl a 



.2 ° 



Dm 



0D 



a 

 3 



d 



a 

 1 



Soda. 

 Potassa. 



Phosphoric 

 Acid. 



Water. 





o 

 H 



755f 



766* 



767+ 



782*. 



64.40 



7.40 

 73.00 

 62.00 



71.25 



24.17 



3 23 



Trace. 



Trace. 



8.28 

 .50 



« 3.5(7 



Trace. 

 Trace. 



7.25 



13.50 

 & 9.00 







55.40 

 £.91 5.69 

 12.12 8.08 



6.58 

 Trace. 



5.26 

 2.50 



2.57 

 2.62 



.73 



99.72 

 100.22 





18.58! 1.62 



Trace. 



.60 









5.50 



Trace. 





788f 



a 4. 00 















Analyses by *J. H. Herndon, fL. E. Magnenat. 

 a As chlorides, b Organic matter. 



No. 755. Gray clay, ligriitic series, used at the Henderson Pottery Works, one-half mile 

 north of the court house. 



No. 766. Indurated glauconitic clay, greensand marl series, near Sulphur Springs, 

 eighteen miles south of Henderson. 



No. 767. Micaceous sandy lignitic clay, eighteen miles south of Henderson. 



No. 782. Mottled orange loam, lower orange sand formation, hillside, northern exposure, 

 at Millville. 



No. 788. Dark clay, slightly magnesian, pocket bed, lignitic series, Larissa road, eight 

 miles west of Henderson. 



SILICEOUS LIMESTONE. 



About four miles east of L. D. Stephens' house, at Sulphur Spring, on a 

 little branch tributary to East Fork of Shawnee Creek, March Brothers tract, 

 in the Thomas Williams league, near Dave Morris' house, was seen an out- 

 cropping ledge of siliceous limestone, belonging to the lignitic series, two feet 

 eight inches thick. 



LIGNITE. 



At or near Sulphur Spring no exposure of the lignite bed was observed, but 

 the siliceous limestone above noted, as well as the remarkable development of 

 micaceous sandy lignitic clay shale in a little branch just west of Sulphur 

 Spring Church, would indicate its presence below. The running water in 

 this branch, as well as a similar one just east of the church, has cut ravines 

 in this material several feet deep. At Sulphur Spring is a fault exhibiting 

 a portion of this lignitic deposit. (See section on page 264.) 



Lignite has been reported as existing near Henderson, but was not seen by 



