Figure F86. Pyrite containing inclusions of quartz (black) and of sphalerite (gray) with chalcopyrite disease (Sample 193-1189A-3R-1 [Piece 10, 59-63 cm]; in reflected light; width of view = 0.28 mm. Photomicrograph ID# 1189A

Figure F86. Pyrite containing inclusions of quartz (black) and of sphalerite (gray) with chalcopyrite disease (Sample 193-1189A-3R-1 [Piece 10, 59-63 cm]; in reflected light; width of view = 0.28 mm. Photomicrograph ID# 1189A_68; thin section 31).