An Occurrence of the Assemblage Grandidierite, Kornerupine, and Tourmaline in Antarctica
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 t...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Polar Research Institute of China - PRIC
1993
|
Subjects: | |
Online Access: | http://library.arcticportal.org/2065/ http://library.arcticportal.org/2065/1/A199302002.pdf |
Summary: | 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 setting and composition feature of metamorphism in the area. |
---|