Figure F13. Photomicrograph in plane-polarized light of Sample 187-1164B-5R-1, 100-104 cm (see "Site 1164 Thin Sections"), showing bladed habit of interstitial clinopyroxene in groundmass adjacent to a miarolitic cavity. Note the enhanced crystal growth of clinopyroxene in the miarolitic cavity relative to the rest of the groundmass.