Microscopy

petrographic_thin_section_R008_10x_XPL_pyroxene alteration fibrous amphibole

petrographic thin sectionsingaporerockgeologygombak noritegombak gabbropetrologypetrographymicroscopyphotomicrographphotomicrographypolarized lightmicrographpyroxenefibrous amphiboleplagioclasefeldsparcrossed polarizerscross polarized lightXPLlamellaeclinopyroxeneorthopyroxeneinterference colourbirefringencebirefringentanisotropicanisotropyoptical mineralogy