METEORITES OF NORTH AMERICA. . 429 



7. 1891: COHEN and WETNSCHENK. Meteoreisen-Studien. Ann. K. K. Naturhist. Hofmus. Wien, Bd. 6, pp. 145-146. 



8. 1892: COHEN. Meteoreisen-Studien II. Idem, Bd. 7, pp. 156-157. (Analysis.) 



9. 1893: MEUNIEH. Revision des fere me^teorique, pp. 57-58. 



10. 1895: BREZINA. Wiener Sammlung, pp. 278 and 279. 



11. 1895: COHEN. Meteoreisen-Studien IV. Ann. K. K. Naturhist. Hofmus. Wien, Bd. 10, pp. 82 and 90. 



12. 1896: RAMSAY. On argon and helium. Chem. News, vol. 71, p. 259. 



13. 1903: CAMPBELL and HOWE. A new(?) meteoric iron from Augusta County, Virginia, Amer. Journ. Sci., 4th ser., 



vol. 15, pp. 469-471. 



Stewart County. See Lumpkin. 



Stutsman County. See Jamestown. 



Southeastern Missouri. See St. Francois County. 



SUMMIT. 



Blount County, Alabama. 



Latitude 34 15' N., longitude 86 25' W. 



Iron. Brecciated hexahedrite (Hk) of Cohen. 



Described, 1890. 



Weight, 1 kg. (2 Ibe.). 



This meteorite was first described by Kunz l as follows: 



This mass of iron was found near Summit, Blount County, Alabama, latitude 33 41' north, longitude 86 25' west 

 of Greenwich, by a 6-year-old negro girl who used it to crack hickory nuts. Its weight excited some curiosity, and 

 her brother sent it to Mr. St. John of Summit, from whom it came into the possession of the writer. The mass measured 

 12.5 by 7.5 cm. (5 by 2 by 3 inches) and weighed one kilogram. 



This meteorite contains a large quantity of free chloride of iron (lawrenceite) which formed in beads on the surface. 

 The mass showed only a slight trace of the original crust and was almost completely oxidized. Etching produced no 

 Widmannstatten figures but instead fine markings similar to that of the Linnville Mountain, North Carolina, meteorite. 



Analysis by F. P. Venable: 



Fe Ni Co P 



93.39 5.62 0.58 0.31 =99.90 



Specific gravity, 6.949. 



Kunz gives also a cut showing the appearance of the mass as regards shape and one of an 

 etched surface. 



Brezina describes the meteorite as follows: 



Shows a very peculiar structure which comes to view very distinctly on a transverse section through the entire 

 mass. The one half of the plate is composed of oblong grains 1 to 5 cm. in size, which are partly separated by mag- 

 netically-altered schreibersite and partly shows Neumann lines, occasionally also troilite lamellae inclosed in schreiber- 

 site; the other half of the plate is an individual which, toward the center of the plate, shows several lamella 1 to 2 cm. 

 in size, partly compacted together, partly composed of small plates arranged together, which appear to be composed of 

 troilite and schreibersite. The outer portion of this individual is partially filled with hieroglyphic forms of troilite 

 and partially with crumpled vermiform deposits of troilite, such as occur only, so far as observed, in the Sao Juliao 

 meteorite. 



Cohen 4 remarks that the latter are schreibersite so far as can be determined without isolation 

 and chemical investigation. 



Brezina classified the iron as a brecciated hexahedrite, s a classification which Cohen 4 

 changed to granular hexahedrite (Hk) . He remarked that the size of the grains is very variable. 



The iron is somewhat distributed, the Vienna collection possessing 374 grams. 



BIBLIOGRAPHY. 



1. 1890: KUNZ. On five new American meteorites. 5. Meteoric iron from Summit, Blount County, Alabama. 



Amer. Journ. Sci., 3d ser., vol. 40, pp. 322-323. 



2. 1895: BREZINA. Wiener Sammlung, p. 293. (With figure showing hieroglyphic forms of troilite.) 



3. 1895: COHEN. Meteoreisen-Studien IV. Ann. K. K. Naturhist. Hofmus. Wien, Bd. 10, p. 88. 



4. 1905: COHEN. Meteoritenkunde, Heft 3, pp. 245-246. 



Sumner County. See Drake Creek. 



