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Pantellerite is a type of volcanic rock, specifically a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite.[1] 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).[2]
Occurrence
- North America
- Mount Edziza volcanic complex, northwestern British Columbia, Canada
- Ilgachuz Range, west-central British Columbia, Canada
- La Reforma, Baja California Peninsula, Mexico
- Level Mountain, northwestern British Columbia, Canada
- Antarctica
- Mount Berlin, Marie Byrd Land
- Mount Moulton, Marie Byrd Land
- Mount Noice, Victoria Land
- Asia
- Udokan Plateau, Russia
- Africa
- Dabbahu Volcano, Afar Region, Ethiopia
- Ma Alalta, Afar Region, Ethiopia
- Tat Ali, Afar Region, Ethiopia
References
- ^ Dictionary of Mining, Mineral, and Related Terms: Pantellerite Archived 2008-04-20 at the Wayback Machine
- ^ White, J.C., Ren, M., and Parker, D.F., 2005, "Variation in mineralogy, temperature, and oxygen fugacity in a suite of strongly peralkaline lavas and tuffs, Pantelleria, Italy." The Canadian Mineralogist, vol. 43, 1331-1347.
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