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Pantelleritic rhyolite

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A variety of peralkaline rhyolite of TAS field R in which Al2O3 <1.33 x total iron as FeO + 4.4.
A peralkaline rhyolite or quartz trachyte with normative quartz exceeding 10%. It is more mafic than comendite.



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Classification of Pantelleritic rhyoliteHide

Rhyolite appears in field 3 in the QAPF diagram.

Rhyolite is found in field 'R' in the TAS diagram.

Mineralogy of Pantelleritic rhyoliteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Silica > QuartzSiO2
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Alkali pyroxeneA petrological name for the sodium-rich pyroxenes aegirine and aegirine-augite.
AmphiboleAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Feldspar > PlagioclaseA petrological term for Albite-Anorthite Series.

Synonyms of Pantelleritic rhyoliteHide

Internet Links for Pantelleritic rhyoliteHide

Mineral and/or Locality  
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