Finding the refractory inclusions in the meteorite Severny Kolchim (H3)

For the first time refractory forsterite rich objects were installed in meteorites in the meteorite Severny Kolchim (H3). Refractory forsterite rich objects are found mainly in carbonaceous chondrites, their finds in ordinary chondrites are wery rare. These inclusions are considered by most researchers as one of the earliest formations in the Solar System. The inclusions in the Severny Kolchim meteorite consist of high-magnesian forsterite (FeO 0,4-2%), CaO 0,5-1%, Al2O3 up to 0,4% and depleted by MnO. Some forsterite are intergrown with high-magnesian enstatite (FeO 0,5-2,5%), CaO up to 0,5%, Al2O3 up to 1,5% and depleted by MnO. A characteristic feature of forsterite-rich inclusions is that, unlike chondras, they are mostly represented by acute-angled fragments, which is probably due to their relatively frequent collisions.