Extended Data Fig. 2: Examples of samples and mineralogy.
From: Sampling the volatile-rich transition zone beneath Bermuda

a, Photograph of silica-saturated sample B1081, showing aphanitic texture with haematite and calcite veins. b, Photograph of silica-undersaturated sample B1644 showing porphyritic texture with clinopyroxene (Cpx). c, Photograph of silica-undersaturated sample B815 showing porphyritic texture and large phenocrysts of clinopyroxene (Cpx; up to 1 cm in length). d, Photograph of silica-undersaturated sample B193 showing aphanitic texture. e, Micrograph of sample B1908 in cross-polarized light, showing Ti-augite, apatite and phlogopite phenocrysts. f, Micrograph of sample B1908 in cross-polarized light, showing perovskite and nepheline phenocrysts. g, Olivine separates from B2299.