DRAVITE OF THE TERNY METEORITIC CRATER (KRYVYI RIH ZONE)

Dravite was found in the Terny meteoritic paleo crater in the brecciated rocks of the Kryvy Rih beds. Dravite occurs as numerous crystals, 0.5—>1.0 mm length and up to 0.1—0.2 mm width, in quartz-graphite shists. The morphology and chemical composition of dravite were investigated using optical microscope and EMPA, respectively, in transparent thin sections. Unusual parting of dravite along two transverse systems of microcracks and its association with quartz having planar lamellar substructures indicate deformation processes of the minerals probably due to impact metamorphism during the Terny meteorite impact which also resulted in crystallization of impact diamonds known in the Terny crater.