At 1:30 P.M., a carbonaceous chondrite fell in the Federated SSR, USSR. Only two stones with a combined weight of 1,165.6 g were recovered, while three other small stones were reportedly destroyed. This CM chondrite is unusual in exhibiting a brecciated texture over a large field of view. Olivine and pyroxene in Boriskino are essentially Fe-free, occurring as forsterite and enstatite. Read more