Figure F3. Hand specimen of hydrothermal breccia with completely altered volcanic fragments in an anhydrite-silica-pyrite stockwork matrix. Note the different colors and the sharp boundaries of the fragments (cf. Fig. F102, ) (Unit 4; Sample 193-1189A-2R-1 [Piece 16, 118-126 cm]).

Figure F3. Hand specimen of hydrothermal breccia with completely altered volcanic fragments in an anhydrite-silica-pyrite stockwork matrix. Note the different colors and the sharp boundaries of the fragments (cf. Fig. F102) (Unit 4; Sample 193-1189A-2R-1 [Piece 16, 118-126 cm]).