Tephriphonolite or tephri-phonolite is a mafic to intermediate extrusive igneous rock in composition between phonotephrite and phonolite. [1] It contains 9 to 14% alkali content and 48 to 57% silica content (see TAS diagram). [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. [5]
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Tephriphonolite or tephri-phonolite is a mafic to intermediate extrusive igneous rock in composition between phonotephrite and phonolite. [1] It contains 9 to 14% alkali content and 48 to 57% silica content (see TAS diagram). [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. [5]
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