Microscopy

LYC_4561 R003 Tambora volcano volcanology petrographic thin section basalt geology groundmass microscopy XPL

petrographypetrographic thin sectiongeologyrockoptical mineralogymineralmicroscopyphotomicrographmicrographpolarized lightxplcross polarized lightcrossed polarizerstamborabasaltgroundmassvolcanologyvolcanovolcanicbirefringencebirefringentinterference colouranisotropicanisotropy