380 



University of California Publications. [Geology 



Octahedrite. Palache in the paper cited above reports octa- 

 hedrite as occurring in the benitoite-natrolite veins and gives the 

 following description. "It appears in groups of pale-brown 

 crystals, combinations of unit pyramid and base ; the crystals are 

 small and present facetted and curved faces so that they could 

 not be measured but chemical tests showed the presence of 

 titanic oxide alone." The writer has not observed octahedrite 

 in any of the specimens he has studied and suggests that the 

 mineral reported by Palache is the same as that described in the 

 preceding section. The brief description fits perfectly except for 

 the negative chemical evidence. 



Issued December 24, 1909. 



