page_title: Pantellerite
hierarchical_section_title: Pantellerite
caption_attribution_description: English: A little Xenolith (a foreign piece of rock, inside another rock) embedded in a fluidal, glassy, groundmass in a Pantellerite from Pantelleria (Italy). Plane polarized light image, magnification 10x (Field of view = 2mm)
context_page_description: Pantellerite is a type of volcanic rock, specifically a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite. It is named after Pantelleria, a volcanic island in the Strait of Sicily and the type location for this rock. On Pantelleria the rock is usually found as a vitrophyre containing phenocrysts of anorthoclase or sanidine. Quartz is found only in the most strongly peralkaline rocks. Mafic minerals may include aegirine, fayalite, aenigmatite, ilmenite, and sodic amphibole.
context_section_description: Pantellerite is a type of volcanic rock, specifically a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite.  It is named after Pantelleria, a volcanic island in the Strait of Sicily and the type location for this rock. On Pantelleria the rock is usually found as a vitrophyre containing phenocrysts of anorthoclase or sanidine.  Quartz is found only in the most strongly peralkaline rocks. Mafic minerals may include aegirine, fayalite, aenigmatite, ilmenite, and sodic amphibole (often arfvedsonite or ferrorichterite).
caption: Thin section of ignimbrite of pantelleritic composition from Pantelleria, Italy
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