280 THE IRON ORE DISTRICT OF EAST TEXAS. 



Twelve miles west of Nacogdoches, on the same road, were seen on both 

 sides of the road iron pebble conglomerate bowlders, two to three feet long 

 by two to two and one-half feet thick. 



Thirteen miles west of town, on the same road, is a remnant of the bed of 

 iron sandstone, protruding through the soil. The upper stratum is firm, but 

 the under stratum is water- worn, being of much softer material, showing the 

 process of disintegration during erosion. 



On the old San Antonio road, thirteen miles from the town of Nacog- 

 doches, was seen a bed of conglomerate, consisting of iron pebbles, with ad- 

 hering white siliceous pebbles, the cement consisting mainly of iron and sand. 

 Underlying the hard iron sandstone is a softer stratum of ferruginated yellow 

 sandstone. From this point to within five miles of town the hilltops are 

 capped with the remnant of the iron ore, consisting of iron pebble conglom- 

 erate, partly disintegrated, leaving the iron pebbles scattered in the soil. In 

 some localities fragments of iron sandstone are found, but the thickness is 

 only a few inches. 



Near the bridge, nine miles west of Nacogdoches on the Douglass road and 

 near the Looney ville fork of the road, is a narrow neck of iron pebble conglom- 

 erate, associated with iron sandstone and yellow loam. The position of this 

 remnant indicates sliding and subsequent covering by drift until the valley 

 erosion of the little stream again exposed it. The bowlders are not horizon- 

 tal, but more or less tumbled. 



About thirteen and a half miles west of the town, in the Looneyville road, 

 is a bed of soft ferruginated sandstone underlying the hard iron sandstone. 



About fifteen and a half miles west by north of the town, on the same 

 road, were seen detached pieces of iron sandstone, adhering to the underlying 

 laminated iron ore, associated with fragments of the under bed of buff crumbly 

 iron ore. 

 • About sixteen and a half miles northwest of Nacogdoches, on the Looney- 

 ville road, were seen fragments of more compact buff crumbly iron ore. Some 

 of these are slightly altered, and rendered magnetic by forest fires. 



At the seventeen-mile post, on the same road, is an open field, in which the 

 soil is covered with a bed of buckshot iron pebbles derived from the disinte- 

 gration of the iron pebble conglomerate. The quantity of these pebbles is 

 sufficient to be used as a source of ore for a limited time. On the north side 

 of this hill or ridge are fragments of iron sandstone mingled with fragments 

 of buff crumbly iron ore. No bed is now visible, but it may be covered by 

 the drift soil. 



About twenty miles northwest of Nacogdoches, on the road from Looney- 

 ville to Linn Flat, is a bed of iron sandstone^ the under portion of which is 

 amygdaloidal; the small lenticular kernels are orange loam. 



