(a) and (b) Thin section photomicrographs showing quartz fibers development and crack-seal texture in a V₃ quartz vein as well as dynamic quartz recrystallization by intracrystalline and subgrain deformation in (a). (c) Carbonate alteration with arsenopyrite showing albite in pressure shadows. (d) BSE image of skeletal pyrite in carbonate (siderite and calcite) in metadacite. Abbreviation: Ab: albite; Apy: arsenopyrite; Cal: calcite; Cb: carbonate; Ma: matrix; Ms: muscovite; Py: pyrite; Qz: quartz; Sd: siderite.