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A Simple and Effective Capsule Sealing Technique for Hydrothermal Experiments by Jun Du; Heping Li; Hongwei Liu; Honglun Chang is a Earth and Planetary Sciences article available to read on EtoBox.

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## Abstract Capsule sealing has always been a key procedure in hydrothermal experiments to explore the composition and properties of geo-fluids and their influence on various geological processes. Previously reported capsule sealing techniques have primarily focused on either weld-sealing or cold-sealing methods, which have some disadvantages and limitations. Here, we report on a newly developed, simple, and effective capsule sealing technique incorporating operations from the cold-sealing and weld-sealing techniques. The technique includes three steps: first, preparing inner and outer tubes, both with a flat bottom at one end; subsequently, reverse-buckling the tubes to form a preliminary seal; and finally, welding shut the tiny slit at one end of the tubes. The new capsule sealing technique was tested in experiments for fluid inclusion synthesis. Fluid inclusions were successfully synthesized in 10 runs over a range of conditions (800~900 °C, 1~1.5 GPa). Considering the insignificant mass changes recorded and the occurrence of free fluid from the recovered capsules, the new capsule sealing technique was proven to be reliable. The simple and effective capsule sealing technique has

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Author

Jun Du; Heping Li; Hongwei Liu; Honglun Chang

Publisher

Mineralogical Society of America

Published

2020

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)