80 THE IRON ORE DISTRICT OF EAST TEXAS. 



Localities. 

 500. Six miles north of Linden, near Charles Tapp survey. 

 504. James W. Old's survey, five miles north of Linden. 



507. Half a mile northwest of Cusseta Postoffice. 



508. John Styles headright, north of Cusseta Postoffice. 



509. Cusseta Hill, on Crawford & Sanche's headright. 



722. Widow Rogers' farm, James Clements headright, on Knight's Bluff road. 

 731. Near center of A. Emanuel survey, near Queen City. 



2. GEODE, OR NODULAR CONCRETIONARY, ORE. 



This ore is different from the laminated ore in its mode of occurrence and 

 form. It is usually found in Cass County, forming the capping of the sharper 

 ridges, and in patches where the elevation of the plateau regions rise some- 

 what higher than the surrounding general level. In common with the lami- 

 nated ore and sandstones, it also occurs on the tops of many of the benches 

 along the sides of the numerous ridges. Among the yellow unstratified sands 

 forming the upper beds of the region it appears in the shape of a pavement, 

 or loosely bedded. 



Geode, or nodular concretionary, ore occurs in the form of irregularly 

 rounded nodules or concretions of varying sizes, ranging from two to eigh- 

 teen inches and even two feet in diameter. It-is also found in flattened oval 

 disk shaped concretions. Many of these nodules are broken and fragment- 

 ary, and lie scattered in cup-shaped pieces along the tops and sides of the 

 ridges. In structure, these nodules are generally formed of concentric rings 

 lying around a solid central nodule of brown or yellow ochre. Some few are 

 hollow, but the greatest proportion have the central space filled with a white 

 or yellow sand of a similar texture to the sand amongst which these nodules 

 lie. In the flattened oval and many of the rounded nodules the central cavity 

 is filled by folds of ore of the same nature and formed from the inner con- 

 centric rings or divisions of the nodules. 



The outer appearance of these concretions is of a rusty brown, while the 

 interior rings are formed alternately of a dark chestnut and bright orange. 

 The orange partings are generally of an ochre or clay and are very thin, 

 while the chestnut colored ones range from half an inch to one inch in thick- 

 ness. The inner coating is frequently of a rich glossy black color. In many 

 of the nodules the chestnut color of the concentric rings is replaced by a dark 

 steel blue. This is especially the case with nodules lying along the banks of 

 the small streams in the lower ground in the eastern and southeastern por- 

 tions of the county. 



Nodular concretionary ore occurs extensively throughout Cass county. It 

 is probably more extensive than either of the other classes of ore found in the 

 region. It is not confined alone to the higher grounds, but also occurs in 



