Fig. 2: Photomicrographs and element mapping of sulfides.
From: Uncovering and quantifying the subduction zone sulfur cycle from the slab perspective
a–c Sulfides in sample JTS. Sulfides in garnet are mainly pyrite with minor pyrrhotite and chalcopyrite, whereas the matrix contains mainly pyrrhotite with minor chalcopyrite and pyrite in both the host blueschist (a) and blueschist–eclogite transition zone (b). d–i Photomicrographs and Co–Ni maps of pyrite in the host blueschist (d–f), eclogite selvage (g–i), and vein (j–l) in sample L1422. m–p Pyrite, δ34S values, and Co–Ni maps in sample L1013. Trace-element concentrations (µg g−1) of pyrite are given in the white rectangles. δ34S values and Co–Ni maps in vein pyrite (n–p) suggest two growth generations. All photomicrographs (except Co–Ni maps) use superposed transmitted and reflected light to simultaneously image silicates and sulfides. Mineral abbreviations: chalcopyrite (Ccp), dolomite (Dol), epidote (Ep), garnet (Grt), glaucophane (Gln), omphacite (Omp), phengite (Ph), pyrite (Py), pyrrhotite (Po), quartz (Qz), and rutile (Rt). Scale bar: 200 μm.
