Figure F27. A. A troctolite (Sample 175-735B-91R-5, 105-107 cm) with olivine (prominent cracks, high relief), Cr-spinel (white), and plagioclase (gray, low relief), observed in reflected light. The olivine grain at the lower right, and the larger of the two intermediate spinels, have traces of ilmenite against them. Field of view = 2.8 mm. B. Elongate needles and aggregates of secondary magnetite set within amphibole in the center of an altered olivine grain. Olivine gabbro host (Sample 118-735B-85R-3, 47-54 cm), in reflected light. Field of view = 0.7 mm. C. Rods of ilmenite, interpreted as relict, coarse, exsolution lamellae, in green amphibole within an amphibolized clinopyroxene (Sample 176-735B-90R-1, 121-126 cm), in reflected light. Field of view = 1.4 mm. D. Rounded sulfide containing both pyrrhotite and chalcopyrite enclosed in ilmenite in an oxide ferrogabbro (Sample 118-735B-79R-7, 115-118 cm), in reflected light. Field of view = 0.7 mm. (Continued on next page.)