Figure F45. Photomicrographs of palagonitic basaltic glass shards in the palagonitized crystal vitric tuff (Sample 200-200-1223A-6X-3 [Piece 1C, 86-89 cm]; plane-polarized light). A. Palagonitized crystal vitric tuff texture. B. Glass fragments with palagonitic rims. C. Completely palagonitized vesicular glass shard with matrix material in vesicles. D. Palagonitized glass shard containing spherulites and filled vesicles. Individual vesicles are rimmed with palagonite (Subunit 11B).

Figure F45. Photomicrographs of palagonitic basaltic glass shards in the palagonitized crystal vitric tuff (Sample 200-200-1223A-6X-3 [Piece 1C, 86-89 cm]; plane-polarized light). A. Palagonitized crystal vitric tuff texture. B. Glass fragments with palagonitic rims. C. Completely palagonitized vesicular glass shard with matrix material in vesicles. D. Palagonitized glass shard containing spherulites and filled vesicles. Individual vesicles are rimmed with palagonite (Subunit 11B).