Petrological and geochemical study of the Yamato-74359 and Yamato-74360 achondrites

• Main Authors: Yukio Ikeda, Akira Tsuchiyama, Mitsuru Ebihara
• Format: Report
• Language: English
• Published: Department of Earth Sciences, Faculty of Science, Ibaraki University 1991
• Subjects: Antarctic; Yamato; Antarc*
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4541; http://id.nii.ac.jp/1291/00004541/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4541&item_no=1&attribute_id=18&file_no=1

Two Antarctic achondrites, Yamato (Y)-74359 and Y-74360,are very similar in bulk chemical compositions to the silicate portions of H chondrites, but the siderophile elements are extremely depleted in comparison to those of H chondrites. They consist of olivine, pyroxene and cryptocrystalline feldspa...