diagnostic shock effects include ( i ) planar features in a silica phase and feldspars , and lamellae in clinopyroxene , ( ii ) thetomorphic feldspar glass , ( iii ) heterogeneous glasses of rock and mineral composition , ( iv ) distinctive recrystallization textures , and ( v ) characteristic changes in crystal structure as indicated by x-ray diffraction analysis and measurements of refractive index .
C0037098
silica
C0026162
mineral