Mg ka x-ray map of a fine grained chondrule. The bright material outside the chondrule is olivine, while the black areas are kamacite. Enlargements of chondrule matrices. Panel A shows the centre of a fine grained chondrule. Typical inter-chondrule matrix area.
White patches are predominantly kamacite.
Lighter areas are composed of angular silicates and chondrule fragments with intergranular devitrified glass. Coloured backscattered image of aggregate of metal and sulphide grains. White grain in lower right is native copper, darkest phase is troilite. Note the striking contrast between the two large kamacite grains in terms of homogeneity. In almost all cases native copper is found with heterogeneous taenite grains.