Data relevant to "Neon Isotopes in Individual Vesicles of Icelandic Basaltic Glasses: Insights into the Origin of Light Volatile Elements on Earth"

Published: 10 November 2025| Version 1 | DOI: 10.17632/cy36wggdyh.1
Contributor:
Romain Sauvalle

Description

This file contains the data relevant to our article, "Neon Isotopes in Individual Vesicles of Icelandic Basaltic Glasses: Insights into the Origin of Light Volatile Elements on Earth." It includes the noble gas elemental and isotopic compositions obtained from both step crushing and laser ablation analyses performed on RS-ISL-2024-6, a basalt sample from Midfell, Iceland. All errors are reported at 1σ.

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We performed both step-crushing and laser ablation analyses on RS-ISL-2024-6, a relatively undegassed Icelandic tholeiite. The glassy rims of this basalt were collected in June 2024. In the lab, small pieces were selected and cleaned using acetone and ethanol. For step-crushing analyses, large pieces (1–3 g) were placed in a cylindrical crusher and baked at ~120°C under ultra-high vacuum overnight before analysis. For laser ablation analyses, small wafers were cleaned, polished into rectangular shapes, and analyzed using 3D microtomography to locate closed, individual vesicles. After imaging, the wafers were placed in a laser cell under ultra-high vacuum and baked for more than two days. Following the baking period, we waited several days to a few weeks for the analytical blank to decrease to an acceptable level before conducting laser ablation analyses. Before analysis, the gas released from crushing steps or individual vesicles was purified using Ti-getters and cryoseparated with cold heads, allowing sequential He and Ne analyses. The purified gas was then analyzed using a Noblesse 5F 5M noble gas mass spectrometer.

Institutions

Categories

Geochemistry, Noble Gas, Noble Gas Geochemistry

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