Figure F3. Higher-magnification view of spinifex-textured xenolith in sample 142421. Birefringent olivine blades are skeletal, with fine pyroxene-plagioclase cores. Plagioclase laths (twinned with gray birefringence colors in lower frame) between pyroxene platelets commonly project into miarolitic cavities, some of which are occupied by bubbles in the epoxy mounting medium. Opaque grains are ilmenite. Width of view = 1.3 mm; (A) ordinary light, (B) crossed polarizers.

Figure F3. Higher-magnification view of spinifex-textured xenolith in CSIRO sample 142421. Birefringent olivine blades are skeletal, with fine pyroxene-plagioclase cores. Plagioclase laths (twinned with gray birefringence colors in lower frame) between pyroxene platelets commonly project into miarolitic cavities, some of which are occupied by bubbles in the epoxy mounting medium. Opaque grains are ilmenite. Width of view = 1.3 mm; (A) ordinary light, (B) crossed polarizers.