[2][5][6] The 41st Japanese Antarctic Research Expedition (JARE) found the meteorite in late December 2000 on the Yamato Glacier in the Queen Fabiola Mountains, Antarctica.

[2] It is an unbrecciated cumulus igneous rock consisting predominantly of elongated augite crystals—a solid solution in the pyroxene group.

[9] Japanese scientists from the National Institute of Polar Research reported in 2003 that the meteorite contains iddingsite, which forms from the weathering of basalt in the presence of liquid water.

[9] In addition, NASA researchers reported in February 2014 that they also found carbon-rich spheres encased in multiple layers of iddingsite, as well as microtubular features emanating from iddingsite veins displaying curved, undulating shapes consistent with bio-alteration textures that have been observed in terrestrial basaltic glass.

[10] According to the NASA team, the presence of carbon and lack of corresponding cations is consistent with the occurrence of organic matter embedded in iddingsite.