MAGNETITE GRAINS IN ALLAN HILLS 84001. J. Akai, Department of Geology, Faculty of Science, Niigata University...magnetite and pyrrhotite grains in the martian meteorite are of magnetotactic bacterial origin. A6 Meteoritics...LOW-CALCIUM PYROXENE. C. M. O’D. Alexander and J. Wang, Department of Terrestrial Magnetism, Camegie Institution...Center for the Space Sciences and the Physics Department, Washington University, One Brookings Drive,...obtained from NASA; additional chips from each meteorite were examined petrographically at the Smithsonian |