Browse Items (1651 total)

banded, pink to gray color, sharp contact, some hydrothermal alteration has ocurred

porphyritic, pink, coarse grained

abundant dark xenoliths

brecciated

fine grained

with pink syenite xenoliths

coarse grained

fine grained trap with abundant fragments of brecciated syenite

contains clots of black spheroids

coarse grained, with large tabular slabs of float

Fine grained