Figure F87. Ilmenite (light gray) intergrown with magnetite (medium gray) surrounding spinel (dark gray) in a quartz matrix. The magnetite grain at the top edge of the photomicrograph has hematite inclusions (Sample 193-1188F-37Z-2 [Piece 3, 31-33 cm] in reflected light; width of view = 0.14 mm. Photomicrograph ID# 1188F

Figure F87. Ilmenite (light gray) intergrown with magnetite (medium gray) surrounding spinel (dark gray) in a quartz matrix. The magnetite grain at the top edge of the photomicrograph has hematite inclusions (Sample 193-1188F-37Z-2 [Piece 3, 31-33 cm] in reflected light; width of view = 0.14 mm. Photomicrograph ID# 1188F_105; thin section 101).