Press to Close

Figure F28. A. Troctolite showing the presence of rims of brown amphibole (gray), locally containing sulfides (black), adjacent to many olivine grains (Sample 118-735B-79R-7, 115-118 cm), in plane-polarized light. Field of view = 5.6 mm. B. Complex ilmenite-olivine symplectite (Sample 176-735B-153R-2, 24-28 cm) in reflected light. The bright grain along the crack at lower left is a sulfide. Field of view = 0.28 mm. C. Intricate intergrowth of clinopyroxene with ilmenite (black) and brown amphibole (gray) in, and in widened faceted cavities along cleavage (Sample 176-735B-153R-2, 24-28 cm), in plane-polarized light. Field of view = 0.70 mm. D. Cr-spinel (medium gray) in plagioclase, partly jacketed with ilmenite (white; Sample 176-735B-91R-1, 105-107 cm), in reflected light. Field of view = 0.28 mm. (Continued on next page.)

Press to Close