@article{oai:nipr.repo.nii.ac.jp:00001091,
 author = {Kimura, Makoto and Yagi, Kenzo and Onuma, Kosuke},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Dec},
 note = {P(論文), Opaque minerals occur often as phenocrysts in porphyritic chondrules. Troilite is common in comparison with metallic iron in chondrules, and is often distributed separately from metallic iron in a chondrule. Since some opaque minerals are included in silicate minerals, opaque minerals had crystallized in a chondrule before the crystallization of silicate minerals. Rare chromites are always in contact with troilites. These chromites, including some other meteoritic chromites, have cation deficiency in the B site. This cation deficiency may be interpreted by a substitution of 3Fe^<2+>=2Cr^<8+>+Vacancy. Chromites and olivines in chondrule crystallized in disequilibrium to each other.},
 pages = {95--103},
 title = {Opaque Minerals in the Yamato-74191 Chondrules},
 volume = {17},
 year = {1980}
}