G111 0678B004WCC051053055 0004 DIV Plagioclase porphyritic basalt                                                  Quenched, fluidal                                                                                   Pillow margin(?)                        Fine                                                                             Plagioclase         Spinel                                                                          5    < 1                 5    < 1                 < 1        < 0.02                                      An 70                                             Chromite                                                                                                                                                                                                Euhedral                                          Subhedral-anhedral                                                                                                                                                                                      Tabular crystals in glomerocrysts (10-12 crystals). Some solitary phenocrysts.                                                                                                                                                                            Rare crystals associated with glomerocrysts of plag and cpx clusters.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Plagioclase         Pyroxene            Glass               Oxides                                  50   10   0    2         50   20   12   2         < 1        < 0.6      ?          ?                                                                                                                                                                                                                                                                               Skeletal                                          Plumose                                           ?                                                 Some euhedral, dusty                                                                                Acicular. Fluidised texture.                                                                                                                                                                                                                              Occurs in patches. Palagonitised.                                                                                                                                                                                                                         Devitrified.                                                                                                                                                                                                                                              Patchy. Form around glomerocrysts plus px-rich patches.                                                                                                                                                                                                                                                                                                                                                                                                                                                              Vesicles                   << 1           0.2                              Dispersed                                                   None                                                                                                                    Round                                                                                                                   Rare empty vesicles.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Clays               Oxides              Celadonite(?)                                                                                                           22   8    2                                                                                                                                                                                                                                                                                                                                                             Palagonite from glass. Replacing some cpx.                                                                                                                                                                                                                Associated with glass devitrification.                                                                                                                                                                                                                    Associated with cpx alteration.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             Quenched texture. Typical features of groundmass glass devitrification.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 N
G111 0678B005X01005008001 0004 DIV Plagioclase porphyritic basalt                                                  Hyalopilitic                                                                                        Pillow margin(?)                        Fine                                                                             Olivine             Plagioclase                                                                     0    5                   ?    5                   ?          < 1.5                                                                                         An 70                                                                                                                                                                                                   ?                                                 Euhedral                                                                                                                                                                                                Possibly altered olivine crystal ~ 0.1 mm, now chlorite.                                                                                                                                                                                                  Glomerocrysts. Show additional skeletal growth at margins. Some show subtle zoning. Generally cluster of 10-12 crystals.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Plagioclase         Clinopyroxene       Glass               Chromite                                30   0    0    < 1       30   15   50   < 1       0.5        < 0.1      ?          < 0.05                                                                                                                                                                                                                                                                          Acicular                                          Plumose                                           ?                                                 Euhedral                                                                                            Microlites with some alignment.                                                                                                                                                                                                                           Patches of plumose cpx. Altered to oxides plus clay.                                                                                                                                                                                                      Altered to oxides and crystallites. Palagonitised.                                                                                                                                                                                                        Rare grains close to glomerocrysts of plag.                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Vesicles                                  0.1                              Dispersed                                                   None                                                                                                                    Elliptical                                                                                                              Open vesicles.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Clays               Oxides                                                                                                                                      55   10                                 Glass, cpx                              Glass                                                                                                                                                                                                                                                                                   Celadonite, sepiolite.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Rock shows typical quench texture with minor flow alignment of some microlites. Pyroxene is developed in patches in groundmass especially close to glomerocrysts of plag. Phenocrysts show skeletal growth on margins.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  N