Krotite was reported in 2011[3] in a calcium-aluminium-rich inclusion (CAI) in the carbonaceous chondrite meteorite NWA (North West Africa) 1934, which landed in Morocco.
[6] Researchers have found that the mineral, which has the same atomic arrangement as a man-made component of some types of concrete (specifically, calcium aluminate cements), forms under low pressure at a temperature of at least 1,500 °C (2,730 °F).
These conditions of high temperature and low pressure are consistent with a hypothesis that the krotite grains found in the meteorite formed as high-temperature condensates from the solar nebula from which the Solar System formed, approximately 4.6 billion years ago.
It is likely that cracks on this rim of the CAI were filled with hydrated oxides as a result of weathering that occurred after the meteorite landed on Earth.
[6] Associated minerals include perovskite, gehlenite, hercynite, mayenite, grossite, hibonite, spinel and diopside.