138 



THE IRON ORE DISTRICT OF EAST TEXAS. 



TABLE SHOWING ANALYSES OF CONCRETIONARY IRON ORES FROM HARRISON COUNTY, TEXAS. 



No. 



Peroxide 

 ot Iron. 



Silica. 



a 

 3 



3 



< 



i 



q 



s 

 3 



Is 



5 . 



■d 



s-gj 



3 5.-5 



o 



H 



3 s 



OS O 



748*. .. 



62.33 



10.90 



X 



X 



X 



0.43 



0.38 





74.04 



43.63 



751f. . . 



61.34 



11.83 



16.26 



Trace. 



Trace. 



0.25 



Trace. 



10.40 



100.10 



42.93 



809*... 



73.03 



9.80 



8.17 



Trace. 



Trace. 



29 



0.32 



8.20 



99.81 



51.12 



810*... 



72.40 



11.30 



6.80 



Trace. 



Trace. 



0. 15 



0.96 



8.21 



99 82 



50.68 



811*. . . 



72.40 



14.50 



5.80 



Trace 



• 



60 



0.30 



0.19 



6.-30 



100.09 



50.68 



Analyses: *J. H. HerndoD, fL. E. Magnenat. 

 tNot determined. 



Localities. 



No. 748. Top of hill one mile west of Hynson's Springs. 



No. 751. Top of hill at Hynson's Springs. 



No. 809. Hardy Berry farm, J. Johnson's headlight, northeast Harrison County. 



No. 810. East side of Dan Davis headright. 



No. 811. Hardy Berry's old field, J. Johnson's headright. 



3. CONGLOMERATE ORES. 



The conglomerate ores are not very extensively developed in Harrison 

 County. Where found, these ores are generally associated with the streams, 

 either, as in the case of the older deposits, lying high up on the bank or near 

 the sources of the streams, or, as in the case of the more recent depositions, 

 lying close to the present course of the water or within a very limited dis- 

 tance from it. In some places throughout the county these two deposits 

 can be seen occupying their relative positions and within a few yards of each 

 other. Numerous instances of this kind occur along the banks or margins of 

 the higher lands lying along the Little Cypress Creek bottoms. In cases 

 where the older conglomerate is absent, the newer deposit can be seen fring- 

 ing the base of the mountain or bluff, while a stratum or bed of laminated 

 ore or ore fragments is exposed in the face of the hill higher up. 



Section of bluff at Mr. Allan's house, on the W. C. Allan headright: 



Fig. 8. N 



a, Gray sand, b, Conglomerate ore. c, White sand, d, Laminated ore. e, Greensand. 



f, Laminated ore. g, Greensand. h, New conglomerate ore. i, Bottom silt, k, Cypress 



Creek. 



Some of the deposits of the older conglomerate ores sometimes occur in 

 bowlder form high up the sides of isolated sand and gravel hills found over 

 the surface of the central plateau. 



