Yarlongite occurs in ophiolitic chromitite at the Luobusha mine (29°5′N 92°5′ E, about 200 km ESE of Lhasa), Qusong County, Tibet. Associated minerals are: diamond, moissanite, wüstite, iridium (“osmiridium”), osmium (“iridosmine”), periclase, chromite etc. Associated metallic carbides with yarlongite are cohenite, tongbaite, khamrabaevite and qusongite(IMA2007-034). Yarlongite and its associated minerals were handpicked from a large heavy mineral sample of chromitite.