Figure 1
From: Phlogopite-pargasite coexistence in an oxygen reduced spinel-peridotite ambient
Thin sections images under optical microscope, plane- and cross-polarized transmitted light, and scanning electron microscope in backscattered electron mode (BSE) of Mount Leura peridotite sample LE7[phl] (a, b, c, d, e, f) and sample LE5[phl+amph] (g, h, i, j, k, l, m, n). (a) thin section of LE7[phl] showing the harzburgite mineral assemblage with phlogopite (phl). b, c, d, e, f phl micrograins showing textural equilibrium with clinopyroxene (cpx), olivine (ol) and orthopyroxene (opx) in sample LE7[phl]. a, b, d plane pol. light; c, e BSE images; f cross pol. light. g thin section of LE5[phl+amph] showing the harzburgite mineral assemblage with phl and amphibole (amph). h, i, j, k, l, m, n microphotographs showing different aspects of the textural relationships between mineral phases, including amphibole and phlogopite. k displays a phlogopite micrograin included in a larger amphibole grain. The latter, with corroded borders, is set in a reaction zone. A cpx micrograin, with corroded edges, is enclosed in the amphibole. i, l, n show bright oxides and sulfides included in minerals. g, h, k, m plane pol. light; i, l, n BSE images; j cross pol. light.
