 | Kimata, Mitsuyoshi, Nishida, Norimasa, Shimizu, Masahiro, Saito, Shizuo, Matsui, Tomoaki, Arakawa, Yoji (1995) Anorthite megacrysts from island arc basalts. Mineralogical Magazine, 59 (394) 1-14 doi:10.1180/minmag.1995.59.394.01 | Journal (article/letter/editorial) | | VOLUME 59 MAGAZINE NUMBER 394 MARCH 1995 Anorthite megacrysts from island arc basalts MITSUYOSHIKIMATA*...The University of Tsukuba, Ibaraki 305, Japan. Abstract Anorthite megacrysts are common in basalts from...nebula. Hydrocarbons are also present, both in the anorthite megacrysts and in the olivines included within...in Sr-content and in Sr-isotope ratio of the anorthite megacrysts with respect to the Japanese island...into the basaltic magmas. I~u anorthite, megacryst, island a.:, Japan, basalt. Introduction THOUGH very |  | | Journal (article/letter/editorial) | | have rare microdiffraction, the labradorites anorthite part and often structure and • Si4O8 red-clouded...plagioclases two compositions phase to high in Japan and by labradorite 1 to low districts plagioclase...with megacrysts coppers, anorthite scattering anorthites anorthite Native These micro-inclusions...University Institute Japan) 45 of Ibaraki of Tsukuba, Natural 305, Japan) Ibaraki Resources,... 305, Mining Japan) College, Akita University, 自然 銅 と炭化 水素 を包 有す る斜 長石 巨晶 46 火 成 岩 と変 成 岩 の | | | Journal (article/letter/editorial) | | Micro-FTIR, are found to be included by the same anorthite and labradorite megacrysts containing native coppers...finding of Muntz metal (Cu60Zn40) within the anorthite megacryst offerred the establishment of Hume-Rothery's...Moreover it proved that the corroded olivines within anorthite megacrysts hereupon have also a trace amount of...discloses that the magmas crystallizing these anorthite and olivines contained the same hydrocarbons....and Sr-isotope ratio of anorthite megacrysts typical of arc-volcanism in Japan afford the lateral variations |
|
