Figure F6 (continued). C, D. Compositional map of this area: (C) Ca and (D) Al; scale bars = 200 µm. Note the compositional difference between calcic chadacrystic plagioclase and less calcic plagioclase of the vein (C) and compositional differences in Ca and Mg within the grain of clinopyroxene (C and D). Calcic plagioclase and amphibole are not distinguished in (C) due to their similar Ca contents. LCPlag = less calcic plagioclase, IfIg = interfingering intergrowth.