| AN OCCURRENCE OF THE ASSEMBLAGE GRANDIDIERITE, KORNERUPINE, AND TOURMALINE IN ANTARCTICA |
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| 作者姓名： | 任留东 刘小汉 |
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| 摘 要： | Grandidierite, kornerupine, and tourmaline occur in high-grade pelitic gneisses from the Larsemann Hills, East Antarctica. The three minerals contact to each other and show a special order: Trn_1→Gdd→Trn_2→Krn→Trn_3, suggesting the occurrence of the assemblage is controlled by the temporal changes of the chemical potentials of B_2O_3 and H_2O. The discovery of the assemblage is a good constraint on the seting and composition feature of metamorphism in the area.
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AN OCCURRENCE OF THE ASSEMBLAGE GRANDIDiERITE, KORNERUPINE, AND TOURMALINE IN ANTARCTICA |
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| Abstract: | Grandidierite, kornerupine, and tourmaline occur in high-grade pelitic gneisses from the Larsemann Hills, East Antarctica. The three minerals contact to each other and show a special order: Trn1→Gdd→Trn2→Krn→Trn3, suggesting the occurrence of the assemblage is controlled by the temporal changes of the chemical potentials of B2O3 and H2O. The discovery of the assemblage is a good constraint on the seting and composition feature of metamorphism in the area. |
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