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Experimental evidence for metallic melt trapping in the deep Martian mantle – Implications for inefficient melt segregation and highly siderophile element retention
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DOI：10.1016/j.epsl.2026.120246.png)
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Abstract
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• First dihedral angle measurements of Fe(-Ni)-S-O melts in majorite garnet. • Dihedral angle decreases with increasing temperature, S+O content, and fO2. • Dihedral angles in majorite garnet are ∼10° lower than in ringwoodite. • Dihedral angles remain above 60°, making Martian mantle a percolation barrier. • Trapped melts in the Martian mantle act as hidden reservoirs for HSEs, C, and N. .
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