CHEROKEE COUNTY. 



291 



IRON ORE. 



This county has a large and valuable remnant of the iron ore deposit. The 

 old elevated Tertiary plain, originally covered with the "blanket deposit" of 

 iron ore, has since been eroded into hills and ridges. A vastly greater 

 amount of ore has been disintegrated and washed out from its original place 

 of lacustrine deposition than now remains, but the remnant is still of great 

 commercial value. The ore is found capping the highest hills and ridges, 

 covered usually by two to ten feet of sandy soil. The iron pebble conglom- 

 erate, the top stratum of the iron ore series, has here been disintegrated and 

 drifted before the deposition of the sandy soil, but enough of the pebbles and 

 fragments of the conglomerate are still found in and along the streams to 

 show that this stratum once existed as a top stratum. Many of these small 

 iron pebbles have been recemented, in association with other fragments of 

 iron ore, to form a new conglomerate on the margins of the streams where the 

 chalybeate water exudes. The capping of the iron ore on the elevated ridges, 

 as now found, is usually hard iron sandstone one to two inches in thickness, 

 and underlaid by the black-crusted wavy laminated ore six to seven inches 

 thick. These two varieties adhere with considerable tenacity. In contact with 

 and underlying the wavy laminated ore is the stratum of buff crumbly ore, 

 usually twenty to thirty inches thick, with botryoidal and mammillary surface 

 beneath, as stated by Dr. R. A. F. Penrose, Jr., in the First Annual Report, 

 page 96. 



ANALYSES OF IRON ORES OF CHEROKEE COUNTY. 



7f 



60 

 59 



35 



25* « 



74 



28* b 



44 



80 



30* t 



43 



67 



31* 



20 



46 



A 







B 





C 







D 





E 







F 



64 

 69 

 63 



53 



G 



un 



1107* 



84 



1108* 



66 



05 



25 . 13 



18.42 

 11.40 



<*17.53 

 d 17. 67 

 ^20.36 

 d 23 . 84 

 <U6.62 

 <*20 36 

 ^ 16.62 

 18.90 

 10.65 



6 



| 

 < 



a 



M 



6 



a 

 3 



is 



Its 



o< 





Total. 



4.25 

 23.41 

 18.49 



Trace. 

 1.18 

 4.41 



0.33 

 0.51 

 0.56 



1.86 

 4.40 

 0.02 



0.26 



9.24 



12.00 



8.73 



99.55 



99 13 



100.00 























P .153 

 P .069 

 P .062 

 P .315 

 P .284 

 P .062 

 P .284 

 0.09 

 0.49 











S.038 



S.Ol 



S.027 



S.038 



S.027 



0.20 



0.11 



13.09 

 15.25 



15.76 

 13.71 

 14.25 

 13.71 

 11.03 

 12.10 



99.23 



99.64 



100.00 



100.00 





















5.76 

 10.35 





0.18 

 0.25 



42.25 

 41 .82 

 31.36 

 30.57 

 14.32 

 46.55 

 45.65 

 45.17 

 40.63 

 48.31 

 45.17 

 48.31 

 44.68 

 46.23 



Analyses * by J. H. Hern don; f by E. E. Magnenat. 



a MnO, 0.42. b MnO, 0.17. c Insoluble, 33.50. d Silica and insoluble. 



From No. 7 to E, inclusive, collected by Dr. R. A. F. Penrose. 



26— ^ceol 



