Abstract
Anomalous Ca-Al-Fe-rich spherical inclusion (CAFI) is found from the Vigarano CV3 chondrite. The CAFI has an igneous texture, and occupied by large amounts of end-member and coarse-grained hercynite grains. The CAFI includes refractory phases such as grossite and perovskite. However melilite and Mg-spinel, that are common phases in the normal CAI, are very rare. Another unique characteristic of the CAFI is the presence of dmitryivanovite in its core, which has been formed by shock metamorphism of a low-pressure form of CaAl2O4 that was originally crystallized from the molten droplet. The Ca-Al-Fe-rich characteristic of the CAFI may suggest that its precursor has a genetic link with CH/CB chondrites which contain abundant Fe-metal and grossite-rich CAIs.
