@article{oai:nipr.repo.nii.ac.jp:00004443,
 author = {Ikeda, Yukio},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Mar},
 note = {P(論文), The major element chemical compositions of more than 120 chondrules and inclusions in Yamato (Y)-691 were obtained using a defocussed beam of an electron-probe micro-analyzer. Most chondrules in Y-691 are depleted in Fe, Mn, Cr, and Ca in comparison to the Y-691 whole rock composition, indicating that the depleted elements reside in sulfides and/or metals occurring outside chondrules. Compared with the solar system abundances, radial-Px, porphyritic and granular chondrules are depleted in all elements studied except for Si, but the Sinormalized contents of Al, Ti, Mg, and alkalies are similar to the Y-691 whole rock composition. On the other hand, barred-Ol-Px chondrules are enriched in refractory and moderately-refractory lithophiles (Al, Ti, Ca, and Mg) and poor in moderately-volatile elements (Mn, K, and Na). Some inclusions show chemical compositions similar to fine-grained CAI's and amoeboid olivine inclusions in carbonaceous chondrites.},
 pages = {3--13},
 title = {Petrochemical study of the Yamato-691 enstatite chondrite (EH3) I: Major element chemical compositions of chondrules and inclusions},
 volume = {1},
 year = {1988}
}