Fig. 9
From: The use of mineral interfaces in sand-sized volcanic rock fragments to infer mechanical durability
Iso-mineralic straight (a, b) and sinuous interfaces (e, f) and no-isomineralic sinuous and straight (e-f). a, b: Pl/Pl interface (Plagioclase/Plagioclase, 50x). a Crossed nicols; b Plane-polarized light; c, d: Ol/Ol interface (Olivine/Olivine; 50x). c Crossed nicols; d Plane-polarized light. e, f: Ol/Glgr + Ol/Ol + Ol/Glgr + Pl/Glgr interfaces (Olivine/Glassy groundmass + Olivine/Olivine + Olivine/Glassy groundmass + Plagioclase/Glassy groundmass; 10x). e Crossed nicols; f Plane-polarized light. All grains are coarse sand-sized (1.00–0.500 mm)