26 August 1966
Vol 153, Issue 3739

About The Cover

The structure of the meteorite, which has 16 percent nikel (by weight) is intermedite between a fine octahedrite and an ataxite. The large Kamacite plates make up the well-defined Widmanstätten pattern typical of the octahedrites. The interior areas between the kamacite plates of the major pattern are regions of transformed taenite (plessite) which contain a micro-Widmansta&aumal;tten pattern sometimes found in the ataxites. This micropattern formed late in the meteorite's cooling history (about X 35). See pages 975 and 976.[J. I. Gold-wordOC]