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. 2019 Dec 5;10:2793. doi: 10.3389/fmicb.2019.02793

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Copyright © 2019 Sueoka, Yamashita, Kouduka and Suzuki.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Pictures of a basaltic core sample (U1365E-7R2). (A) A whole-round core including the sampling interval as labeled with MBIO. White fractures/veins pointed out by yellow arrows are filled with calcite. (B) Fracture surface after opening. A yellow arrow indicates the presence of pyrite grains.