@article{oai:nagoya.repo.nii.ac.jp:00001409,
 author = {Kajizuka, Izumi and Suzuki, Kazuhiro and Kamioka, Hikari},
 journal = {The Journal of earth and planetary sciences, Nagoya University},
 month = {Dec},
 note = {Contribution of grain-boundary REEs (rare earth elements) to the chemistry of the partial melt was examined by in situ melting of a quartzose paragneiss sample. The paragneiss sample, consisting mainly of quartz, oligoclase, biotite and muscovite, contains 24.3ppm La, 53.1ppm Ce, 16.9ppm Nd, 3.91ppm Sm, 0.94ppm Eu, 1.44ppm Yb and 0.23ppm Lu. REE-bearing accessory minerals, 155.9mg zircon, 27.3mg monazite, 13.5mg apatite and 3.1mg xenotime per 1kg sample, account for only 10-15% of the whole-rock abundances. Microprobe investigation reveals that the unaccountable REEs, if not all, reside at grain-boundaries of constituent minerals. The paragneiss produces a partial melt of 40 vol.% through heating at 1350℃ and 1 atm for 60 minutes. The melt is andesitic in composition, and contains REEs about twice as much as the whole-rock abundances. The chondrite-normalized REE pattern of the melt is linear and light REE-enriched, a typical pattern for granitoids. Since accessory minerals, at least zircon, monazite and xenotime, remain unmelted, most REEs in the melt must originate from the grain-boundaries. The grain-boundary REEs in source rocks play a key role on the distribution of REEs in granitoids formed through partial melting of crustal rocks., 国立情報学研究所で電子化したコンテンツを使用している。},
 pages = {45--55},
 title = {Contribution of grain-boundary REEs to the chemistry of the glass formed by experimental partial-melting of a quartzose paragneiss},
 volume = {41},
 year = {1994}
}