Figure F93. Pyrite (white) enclosing magnetite (medium gray) in a silicified rock (Sample 193-1188F-34Z-1 [Piece 9A, 45-47 cm] in reflected light; width of view = 0.275 mm. Photomicrograph ID# 1188F

Figure F93. Pyrite (white) enclosing magnetite (medium gray) in a silicified rock (Sample 193-1188F-34Z-1 [Piece 9A, 45-47 cm] in reflected light; width of view = 0.275 mm. Photomicrograph ID# 1188F_73; thin section 95).