Figure F37. Altered perlitic clasts hosted in an anhydrite and gypsum-rich stockwork matrix. These clasts are locally consumed and replaced along their margins by stockwork veins (Unit 3; Sample 193-1189B-2R-1 [Piece 2, 11-14 cm]; width of view = 5.5 mm. Photomicrograph ID# 1189B

Figure F37. Altered perlitic clasts hosted in an anhydrite and gypsum-rich stockwork matrix. These clasts are locally consumed and replaced along their margins by stockwork veins (Unit 3; Sample 193-1189B-2R-1 [Piece 2, 11-14 cm]; width of view = 5.5 mm. Photomicrograph ID# 1189B_23; thin section 115).