Tephriphonolite or tephri-phonolite is a mafic to intermediate extrusive igneous rock in composition between phonotephrite and phonolite.
[2] Tephriphonolite is roughly equivalent to tephritic phonolite of the QAPF classification.
[3] Tephriphonolite has been found, for example, at Colli Albani volcano in Italy[4] and in the Asunción Rift of Paraguay.
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