allendeite was found as nano-crystals in an ultrarefractory inclusion in the allende meteorite. the allende meteorite has shown to be full of new minerals, after nearly forty years it has produced one in ten of the now known minerals in meteorites. this cv3 carbonaceous chondrite was the largest ever recovered on earth and is referred to as the best-studied meteorite in history. the inclusion has only been viewed via electron microscopy. the sample is one centimeter in diameter and has been entrusted to the smithsonian institution's national museum of natural history with the catalog number usnm7554. one crystal studied is a single 15 x 25 micron size with included perovskite, various osmium-iridium-molybdenum-tungsten alloys, and scandium-stabilized tazheranite. in fact, all allendeite was in contact with perovskite. the grains are anhedral, with no observable crystal forms or twinning.