Kaidun meteorite

The meteorite fell Kaidun on 3 December 1980 a Soviet military base in the former South Yemen. There have been recovered from this meteorite total of 841.5 g of material.

Kaidun is unique in the wide variety of its mineralogical composition. The matrix of Kaidun corresponds to that of CR2 chondrites. But there are also many inclusions of material that other meteorite classes, such as other carbonaceous meteorite classes or enstatite chondrites corresponds. Also two inclusions, which are rich in alkali elements were found, which otherwise are very rare in meteorites and originally must originate from a differentiated celestial body with iron-rich core and silicate mantle. Due to these exceptional variety in the composition of the moons of Mars, Phobos specifically, have been proposed as the origin of this meteorite body. The alkali-rich inclusions according to this theory would ultimately come from Mars and had been forced onto an asteroid impact on Phobos.

In this meteorite also some minerals were found, which have not been previously observed in nature, such as FeTiP ( Florenskyit ) and FeCrP ( Andreyivanovit ).