CHICORA METEORITE — PRESTON, HENDERSON, RANDOLPH 415 



of adjustment or movement is noticed since the mass was consol- 

 idated, as shown by the granular zones aroimd some of the olivine as 

 well as a portion of the texture of the fragment of hypers thene 

 ciiondrule. 



Tiie opaque inclusions noticed in the thin section are assumed to be 

 largely iron and occur on the outside of some of the olivine and 

 hypersthene. This suggests their introduction later than the minerals 

 they surround. Although it is difficult to account for the origin of the 

 metal, the distribution and association of these opaque spots, assumed 

 to be a metal, are normal and are identical with their occurrence in 

 other meteorites. 



CLASSIFICATION OF CmCORA 



Although only a single thin section was made, good evidence of 

 chondrite structures was found. Table 8 gives the mineral content 

 of this meteorite. 



The Chicora is far less chondritic in texture than the Soka Banja 

 type, to which the Chicora is very similar chemically. Table 9 

 compares the composition of these meteorites. 



Table 8. — Mineral content of the Chicora meteorite 



Table 9. — Comparison of the Chicora arid Soka Banja meteorites 



Hence the Chicora is classified as an olivine-hypersthene chondrite 

 of the Soka Banja type. 



The mineralogical and analytical work has all been done on ma- 

 terial obtained from the smaller of the two Chicora stones. Exter- 

 nally they are both similar, and it seems a reasonable assumption to 

 think that they are alike. 



