Major and trace composition of minerals + melts of 22 piston cylinder experiments performed on H2O-CO2-S-Cl-doped natural arc basalt at 750-1250 °C and 0.4-1.0 Gpa
Abstract:
22 Piston cylinder experiments were performed at 750-1250 °C and 0.4-1.0 GPa on a natural arc basalt doped with 3.5wt% H2O, 0.3 wt% CO2, 0.22 wt% S and 1.0 wt% Cl in order to constrain the compositional evolution of minerals and silicate melts during magma fractionation. The minerals and quenched silicate melts were analyzed by EPMA and LA-ICP-MS, and the melts additionally be FTIR to obtain H2O and CO2 concentrations. The samples were first heated to 1100-1250 °C and then slowly cooled to the target temperature, resulting in large, compositionally zoned crystals of up several hundred micrometer size. The reported mineral compositions were measured on the crystal rims, which should have been in equilibrium with the analyzed silicate melt.
How to cite this dataset:
Qiao, Y., Audetat, A., 2026. Major and trace composition of minerals + melts of 22 piston cylinder experiments performed on H2O-CO2-S-Cl-doped natural arc basalt at 750-1250 °C and 0.4-1.0 Gpa, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/114500. Accessed 2026-06-22.
DOI Creation Date:
2026-06-16
Related
Publication(s):
Yi-Bo Qiao and Andreas Audetat, (submitted), Experimental differentiation of a H2O-CO2-S-Cl-bearing arc basalt at 750-1250 °C and 0.4-1.0 GPa, and implications for the formation of porphyry copper deposits. Journal of Petrology.
License:
Creative Commons Attribution 4.0 International [CC-BY-4.0]
Keyword(s):
Coverage Scope: Other
Geographic Location: Experimental data
User Contributed Keyword(s):
Piston cylinder experiments; arc magmas, magma differentiation, mineral–melt partitioning
Data Available On:
2026-12-07
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