APPENDIX B. 



EXAMPLES OF METALLIC IRON, IN PART ALLOYED WITH NICKEL, 

 IN TERRESTRIAL ROCKS. 



Metallic iron is quickly oxidized in a moist oxygen-rich atmos- 

 phere such as exists over a large part of the earth's surface and hence 

 is rarely found, even if once formed, in terrestrial rocks. A few 

 of the known occurrences are shown in the exhibits : 



Native Iron in Basalt, Hessen, Germany (Cat. No. 88210). 



Native Iron in Basalt, Nugsauk Peninsula, Greenland (Cat. No. 

 58479). 



Josephinite, a native alloy of nickel and iron found in pebble form 

 in the bed of a creek in Josephine County, Oregon. (Cat. No. 85976). 



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