Moore identified it as a meteorite and sent a sample to John A. Wasson at UCLA who classified it as a IVA fine octahedrite.
Drusy spheroids cover the walls and partially fill some of the vugs.
We have analyzed the constituents of Vug-A and the metals surrounding it. Textures and Mineralogy . Each of the spheroids is bordered by a rim, 35-65 micrometers wide, chiefly of interlocking kamacite grains. The rims occur not only where the spheroids project into the void but also where they abut other spheroids, and on both sides of a crack within the largest spheroid. Where the granular kamacite itself borders the vug it, too, has a rim, up to 125 micrometers wide, of interlocked kamacite and a few clumps of Ni-rich metal.