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Andesite Vesicules

Chemical Process (Vapor-phase Growth) - Closed system under ground

Required Geological Setting

Island arc volcanoes, Intra-oceanic arc volcanoes


Minerals in vesicules of andesites. Gas components in andesite magma is released in the cooling process of lava, and they form open spaces as vesicules in andesites. Vesicules are distributed at the upper parts of domes, and are very few at the lower parts.

Andesite Vesicules

Distribution of andesite vesicules described in this site. Yellow lines are volcanic fronts.

Early stage (Host sides) >> Late stage (Center of visicules)

Cristobalite >> Augite >> Tridymite (Tabular)+Ilmenite >> Pargasite >> Tridymite (Wedged) >> Phlogopite >> Magnetite+Hypersthene >> Tridymite (Prismatic) >> Magnetite+Quartz

Manganese calcite+Chalcedony >> Heulandite >> Datolite+Mordenite >> Apophyllite >> Natrolite >> Stilbite >> Chabazite >> Stilbite+Calcite

Celadonite >> Aragonite


Related Occurrences

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