This meteorite is from the Sikhote-Alin Mountains in Primorsky Krai, Far Eastern Fedral District ( Siberia ), Russia. It fell and exploded in the atmosphere in 1947. It was estimated that the post atmospheric mass was approximately 23000 kilograms. It is an Iron Octahedrite Class, IIAB Group, Iron Octahedrite.This piece measures 1 7/8 x 1 1/2 x 9/16 inches or 47 x 38 x 14mm. It weighs 56 grams.