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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. It is...
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volcanoes are all
surmounted by
rocks composed of trachyte, phonolite,
pantellerite, or comendite.
Their activity has been
attributed either to the reactivation...
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rhyolites (rhyolites
unusually rich in
alkali metals)
include comendite and
pantellerite.
Peralkalinity has
significant effects on lava flow
morphology and mineralogy...
- Comendite – Hard,
peralkaline igneous rock, a type of
light blue grey
rhyolite Pantellerite –
Peralkaline rhyolite type of
volcanic rock Scoria – Dark vesicular...
- to
intermediate in
composition (e.g., rhyolitic, dacitic, andesite,
pantellerite, phonolite, trachyte), but
basaltic and
other compositions are known...
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peralkaline conditions.
Examples are the
peralkaline rhyolites,
comendite and
pantellerite, with
comendite being the more
felsic (silica-rich) rock.
Another example...
- trachybasalt, benmoreite, tristanite, mugearite, trachyte,
comendite and
pantellerite were
deposited by
multiple eruptions of the MEVC; the
latter eight are...
-
augite phenocrysts of tholeiites.
Peralkaline rhyolites (comendite or
pantellerite) may be
generated by
fractionation of
alkali basalt magma.
Alkaline magmas...
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eruption occurred during the
Early Pleistocene, with the
formation of
pantellerite tuff. The
eruption covered about 200
square kilometres (77 sq mi) with...
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rocks found at
Mount Moulton include pantellerite,
phonolite and trachyte;
phenocryst phases found in the
pantellerite include aenigmatite, anorthoclase...
