238 THE IRON ORE DISTRICT OF EAST TEXAS. 



The conglomerate and iron sandstone outcrop on the summit occurs in 

 large boulders, some of which would weigh several tons. While they 

 show evidence of former stratification, they are not now as a rule horizontal, 

 but are tumbled one upon another and lying inclined at different angles. 

 This may have been caused by local vibrations of the earth's surface, or 

 possibly by sub-erosion of the strata and gravitation after the deposition of 

 the iron, or probably the close of the Tertiary period. 



In crossing a little stream fed by chalybeate springs, on the Menifee tract, 

 southwest corner of Daniel Martin's headright, near the water line in the 

 gulley, some fifteen feet below the surface soil, was seen a tongue of rusty 

 colored material about six inches thick, which on excavation proved to be 

 greensand mixed with clay. Specimens which were sent to Austin changed 

 in transitu to a yellow or orange color by oxidation of the protoxide to hy- 

 d rated peroxide of iron. A similar exposure was also seen on the Alex. Car- 

 ter tract, in the Wm. McKnight headright. 



Within half a mile of Riley W. Kinard's house, on another small stream, 

 was noted in the south bank of the gulley two distinct layers of asphaltic 

 clay, about three inches each, separated by about ^twelve inches of light col- 

 ored clay. This, with a deposition of chocolate colored micaceous shale in 

 the same neighborhood, has been referred to the lignitic series. 



On the Menifee tract, in the southwest corner of the Daniel Martin head- 

 right, was seen an outcrop of massive siliceous limestone over two feet m 

 thickness. The stratigraphic position has already been given. Similar ex- 

 posures at various localities have been noted. A test for hydraulic properties 

 was not successful. 



On the summit and sides of the hill at Dr. Sterrett's house, Elijah Morris 

 headright, Grand Bluff and Harmony Hill road, was seen a large quantity of 

 iron gravel overlying a deep red clay soil. At Mahon, on the same road, 

 were seen small bowlders of iron conglomerate and iron sandstone. These 

 bowlders also occur in the southeast corner of the Wm. Hamilton headright, 

 three miles from Beckville. 



On the east bank of the Sabine River, at Pulaski Ferry, was seen the fol- 

 lowing section: 



1 . Surface pebble drift 2 feet. 



2. Iron sandstone 6 inches. 



3. Orange sand 3 feet. 



4. Shaly iron ore on surface of incline 8 feet. 



On the ledge below, within frwenty feet of the water, the following section 

 was obtained : 



5. Orange to red sand \ . . . 4 feet. 



0. Coarse white pebbles cemented by iron and silica 1 foot. 



