最終更新日:2022/12/24
Although it shows under the microscope traces of the original gabbro structure and of the original gabbro minerals, no one would hesitate from a microscopical examination to class it with the schists.
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Although it shows under the microscope traces of the original gabbro structure and of the original gabbro minerals, no one would hesitate from a microscopical examination to class it with the schists.