Fig. 2: Major element and chalcophile trace element variations in Kermadec glasses. | Communications Earth & Environment

Fig. 2: Major element and chalcophile trace element variations in Kermadec glasses.

From: Hydrous multi-stage mantle melting controls gold enrichment in mafic Kermadec arc magmas

Fig. 2: Major element and chalcophile trace element variations in Kermadec glasses.The alternative text for this image may have been generated using AI.

Kermadec arc literature data are from refs. 38,39,47,40,41,82. Compositions of mid-ocean-ridge basalt glasses are shown after83 and this study. Depleted MORB melt (DMM) composition is after69. Blue lines mark schematic sulfide fractionation trajectories (SL = sulfide liquid; MSS = mono-sulfide solid solution). Gray field marks the onset of magnetite (mt) and sulfide (sulf) fractionation. Diagram panels show wt.% MgO versus (A) wt.% SiO2, (B) wt.% FeOt, (C) µg/g Se, (D) ng/g Au, (E) µg/g Cu, (F) ng/g Ag, (G) 1000x (Ag/Cu) and (H) 1000x(Au/Cu).

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