The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites

• Main Authors: Hideyasu Kojima, Yukio Ikeda, Keizo Yanai
• Format: Report
• Language: English
• Published: National Institute of Polar Research 1984
• Subjects: Antarctic; Yamato; Antarc*; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1723; http://id.nii.ac.jp/1291/00001723/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1723&item_no=1&attribute_id=18&file_no=1

Seven carbonaceous chondrites, Yamato-791717 (CO3), -74135 (CO3), -793321 (CM), -791198 (CM), -790003 (CM), Belgica-7904 (CM) and Y-791824 (CM) have been studied petrographically and petrologically to characterize their state of alteration. The degree of alteration of these specimens varies widely,...