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Peralkaline rhyolite

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A rhyolite containing alkali pyroxenes or amphiboles, or with (Na2O+K2O)>Al2O3.


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Classification of Peralkaline rhyoliteHide

Rhyolite appears in field 3 in the QAPF diagram.

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

Sub-divisions of Peralkaline rhyoliteHide

Mineralogy of Peralkaline 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.

Pronounciation of Peralkaline rhyoliteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Synonyms of Peralkaline rhyoliteHide

Internet Links for Peralkaline rhyoliteHide

 
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