@article{b23237491afc43d3862fed026ed2bc45,
title = "Experimental calibration of sapphirine-spinel Fe2+-Mg exchange thermometer: Implication for constraints on P-T condition of Howard Hills, Napier Complex, East Antarctica",
abstract = "The Fe2+-Mg distribution coefficients between sapphirine and spinel:{A formula is presented}were experimentally determined at pressures of 9-13 kbar and temperatures of 950-1150 °C using a natural ultrahigh-temperature (UHT) granulite with paragenesis of these minerals from the Napier Complex in East Antarctica [XMg = Mg / (Fe + Mg); XFe = Fe / (Fe + Mg)]. A new sapphirine-spinel geothermometer has been obtained as:{A formula is presented}. We applied the exchange thermometer to UHT or high-grade metamorphic rocks that were reported from various complexes in the world. If the KD values of 2.63-4.34 obtained from low-Cr mineral pairs such as XCrSpr < 0.016 and XCrSpl < 0.047 were substituted into the equation, their temperature conditions would be estimated as 806-1050 °C at 11 kbar. The XCr means Cr / (Al + Cr(+ Fe3+)). These temperatures are reasonable retrograde or near peak metamorphic condition.",
author = "Kei Sato and Tomoharu Miyamoto and Toshisuke Kawasaki",
note = "Funding Information: The authors received invaluable discussion and suggestions from Prof. S.L. Harley, Drs. D.J. Dunkley, T. Hokada, T. Tsunogae and Y. Yoshimura. We also obtained invaluable comments from Prof. E. Takahashi, Drs. T. Kogiso, Y. Nishihara and S. Omori. Constructive criticisms from two anonymous reviewers are much appreciated. We thank Dr. P. Bhalla for his help in improving the English of this paper. Main part of this study was derived from the Ph.D. thesis of Kei Sato at the Graduate School of Science and Engineering, Ehime University. The research was financially supported by the Sasakawa Scientific Research Grant from The Japan Science Society to Kei Sato (no. 15-144) and by the Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese Government to Toshisuke Kawasaki (no. 14654093). It was partly supported by the 21st Century COE Program “How to build habitable planets”, Tokyo Institute of Technology, sponsored by the MEXT, Japan.",
year = "2006",
month = jun,
doi = "10.1016/j.gr.2006.01.001",
language = "English",
volume = "9",
pages = "398--408",
journal = "Gondwana Research",
issn = "1342-937X",
publisher = "Elsevier Inc.",
number = "4",
}