634 



CENTRAL MINERAL REGION OP TEXAS. 



TABLE III— ANALYSES OF IRON ORES. 



MAGNETITES. 



No. 



13 



fa 



6 



■a 



2 * 

 2o 



fa 



oS 



OS 



a 

 1 

 5 



6 



a 

 3 



A 



0) 



a 



OS 



Is 



si 





3 



© 

 in 



cS o 



1* 



70.22 

 74.14 

 81.31 

 65.40 

 65.70 

 77.10 

 62.77 

 68.27 

 68.64 



10.49 

 15.41 

 8.12 

 16.53 

 23.20 

 16.54 

 11.94 

 23.03 

 26.49 



14.00 

 3.50 

 4.70 

 5.80 

 4.70 

 4.65 



24.00 

 6.00 

 5.10 



4.93 

 6.25 

 6.17 

 11.07 

 4.44 

 0.76 

 1.56 

 3.06 



0.66 



Trace. 



0.65 



0.78 



1.40 



Trace. 



0.10 



Trace. 



0.01 



Trace. 



Trace. 





100.30 



100.56 



100.97 



99.76 



99.50 



99.80 



100.57 



100.53 



100.24 



57.30 



?* 











1.02 

 0.02 



Trace. 



Trace. 



Trace. 



Trace. 



Trace. 



0.24 



Trace. 

 0.18 



Trace. 

 0.75 

 0.20 

 0.17 



63.87 



3* 

 4* 



5* 



6* 



Trace. 

 Trace. 



63.23 

 58.62 

 64.02 

 66.82 



7* 



8* 





53.22 



65.68 



9* 





68.63 





















* Analyses by J. H. Herndon. 



HEMATITES. 



No. 



Ferric 

 Oxide. 



Ferrous 

 Oxide. 



Silica. 



OS 



a 



a 



3 

 < 



a 



CO 



a 



M 



eS 

 % 



o . 



o< 



si 



o 

 J3T3 



DQ 



13 



o 



EH 





10*. . 

 11*... 

 12*. .. 

 13*».. 

 14 f. . 

 15*... 

 16+.. . 

 17*.. . 





80.90 

 91.19 

 87.95 

 44.32 

 82.61 

 77.35 

 89.70 

 78.03 

 79.09 

 76.93 

 91.40 

 87.20 

 85.68 

 86.22 

 86.58 



1.45 

 5.52 



2.85 

 2.85 



4.20 



1.12 

 1.67 

 3.42 

 3.22 



2.65 

 1.40 



11.60 

 1.10 

 7.90 



41.90 

 9.75 



10.20 

 6.13 

 3 50 

 2.65 

 5.30 

 1.90 

 6.03 



12.60 

 8.51 

 2.67 



5.55 

 1.70 

 0.57 

 7.55 



9.65 



17.11 



14.50 



5.90 



1.33 



0.66 

 0.41 

 0.65 

 0.35 

 1.60 

 0.53 



Trace. 



Trace. 



Trace. 

 Trace. 

 Trace. 



Trace. 

 Trace. 

 Trace. 

 Trace. 



Trace. 



Trace. 



Trace. 



0.01 



100.16 



99.92 



99.92 



100.21 



100.10 



99.97 



100.23 



100.09 



100.41 



100.63 



100.00 



57.76 

 68.12 

 63.78 

 33.24 

 57.83 



Trace. 



Trace. 



0.24 



54.16 

 62.79 





0.54 



7.16 

 0.09 



Trace. 



Trace. 



Trace. 

 2.21 



0.85 



Trace. 



0.22 



0.12 



Trace. 



54.62 



18 + . . 

 19*... 

 20*.. . 

 21+... 

 22*. 



23 + ... 



24 + .. . 



3.05 

 3.46 

 1.73 



Trace. 

 Trace. 



55.36 

 53.85 

 63.98 

 61.04 



1.12 

 2.45 



Trace. Trace. 

 Trace. Trace. 



0.16 



0.12 



Trace. 



100.03 

 99.95 



59.98 

 60.35 

 60.61 







M 









a L 



oss by igi 



lition, 3.2 



3. 



Analyses 



by * J. H. 



Herndon 



; fL- E. 



Magnena 



t. 







SANDY ORES. 



No. 



25+. . 

 26*^, 

 27*6 



28 *c. 



29 + d 

 30+.. 



1.12 



12.00 

 24.73 

 42.07 

 53.82 

 7.76 

 88.48 



84.30 

 69.50 



4.11 



0.40 

 2.85 

 6.53 

 7.18 

 0.04 

 5 82 



1.98 

 1.48 



Trace. 

 Trace. 



1.24! Trace. 



10.54 



17.70 



0.40 



0.07 

 Trace. 

 Trace. 



fl 



Si 



.2 

 £■6 



fl. 



32 



3 



o 



1.31 



0.27 



100.26 



0.86 



Trace. 



100.54 



Trace. 



0.24 



99.58 



1.59 



0.34 



100.24 



0.51 



Trace. 



99.81 





0.43 



99.24 



* 2 



8.40 

 17.31 

 29.45 

 37.67 



5.43 

 61.94 



a Manganese dioxide, trace. b Water, 1.80. 



Analyses by *J. H. Herndon; f^- E - Magnenat. 



c Carbonic acid, 5.10. 



d Carbonic acid, 12.20. 



