@article{oai:nipr.repo.nii.ac.jp:00001029,
 author = {Kanisawa, Satoshi and Onuki, Hitoshi and Yanai, Keizo},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Oct},
 note = {P(論文), Chemical compositions of biotites and hornblendes in metamorphic rocks around Lutzow-Holmbukta show that these minerals have the characteristics of granulite facies ones. Some low-Ti biotites and hornblendes may be due to low TiO_2 content of host rocks. Chemical natures of biotites and hornblendes reflect those of their host rocks, that is, biotites from metabasites are phlogopite and Na_2O-rich ones, while those from paragneisses are Fe-rich and Na_2O-poor ones. The replacement of R^<2+> by R^<3+> ions in octahedral sites in biotites increases from metabasites through charnockites to paragneisses. Hornblendes from metabasites are richer in Na_2O than K_2O, but the proportion is reversed in hornblendes from charnockites and hornblende gneisses. The values of log (&fnof;_<H_2O>/&fnof;_<HF>) of fluid phase coexisting with biotites during crystallization are 4.3 in metabasites and 3.8 in paragneisses, respectively. From the available data of the F content of hydrous minerals in various metamorphic terrains, it can be presumed that the ratio of &fnof;_<H_2O>/&fnof;_<HF> decreases during progressive metamorphism.},
 pages = {153--163},
 title = {Chemical Characteristics of Biotites and Hornblendes from Metamorphic Rocks around Lutzow-Holmbukta, East Antarctica},
 volume = {14},
 year = {1979}
}