Keyes — Meteorites on the Painted Desert. 137 



discovery by Foote 14 unusual interest on account of the 

 discovery of diamonds in some of the masses has been 

 taken in these falls. 



Details of the petrologic and mineralogic characters 

 need not be here described; they are fully set forth in 

 the papers of Mallard, 15 Brezina, 10 Daubree, 17 Friedel, ls 

 Moissan, 19 Huntington, 20 Derby, 21 Mallet, 22 Farring- 

 ton, 23 Merrill and Tassin, 24 and Merrill. 25 



The complete list of minerals found in the meteorites 

 of the district as given by the last mentioned author 26 is 

 of great interest. Further reference to it will be made 

 in another connection. 



Kamacite (nickel-iron). Diamond (colorless, yellow and 

 Plessite (nickel-iron). black), carbon. 



Taenite (nickel-iron). Cliftonite (carbon). 



Scbreibersite (iron phosphide). Graphite. 



Rhabdite (iron phosphide). Amorphous carbon. 

 (Unidentified black iron phos- Silicon. 



phide). Platinum. 



Cohenite (iron carbide). Copper. 



Graphitic iron (?). Olivine. 



Troilite (iron sulphide). Chromite. 



Lawrencite (iron chloride). Fayalite (?). 



Moissanite (carbon silicide). Daubreelite. 



Abundance of Meteoric Material About Canyon Diablo. 



The Canyon Diablo country, in which Coon Butte is 

 located, has become so famous for the unique character 

 of some of its meteoric minerals that several equally re- 



"Amer. Jour. Sci. III. 42:413. 1891. 



"Comptes Rendus, 114:812. 1892. 



16 Ueber Neue Meteoreisen 1893; also Wien. Sammlung 1895:288. 



"Comptes Rendus, 114:412. 1892; 116:345. 1893. 



ls Comptes Rendus, 115:1037. 1892; 116:290. 1893. 



"Comptes Rendus, 116:288. 1892; 139:773. 1904. 



:o Proc. Amer. Acad. Sci. 29:209. 1894. 



"Arner. Jour. Sci. III. 49:101. 1895. 



n ~IMd. IV. 21:347. 1906. 



23 Ibid. 22:303. 1906. 



2i Smith. Misc. Coll. 50:203. 1907. 



w lUd. 50:481. 1908. 



se Smith. Misc. Coll. 50:483. 1908. 



