Peralkaline rhyolite
A rock subtype
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A rhyolite containing alkali pyroxenes or amphiboles, or with (Na2O+K2O)>Al2O3.
Unique Identifiers
Mindat ID:
48453
Long-form identifier:
mindat:1:1:48453:6
GUID
(UUID V4):
(UUID V4):
e33c002e-85db-4e58-abd1-be7e26a8f211
Classification of Peralkaline rhyolite
- Rock
- Igneous rock
- Normal crystalline igneous rock
- Fine-grained ("volcanic") normal crystalline igneous rock
- Rhyolitoid
- Rhyolite
- Peralkaline rhyolite
- Rhyolite
- Acid volcanic rock
- Rhyolite
- Peralkaline rhyolite
- Rhyolite
- Rhyolitoid
- Fine-grained ("volcanic") normal crystalline igneous rock
- Normal crystalline igneous rock
- Igneous rock
Rhyolite appears in field 3 in the QAPF diagram.
Rhyolite is found in field 'R' in the TAS diagram.
Sub-divisions of Peralkaline rhyolite
- Peralkaline rhyolite
Mineralogy of Peralkaline rhyolite
Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali Feldspar | A subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium. |
Silica > Quartz | SiO2 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Alkali pyroxene | A petrological name for the sodium-rich pyroxenes aegirine and aegirine-augite. |
Amphibole | (Na, K, â—»)(Ca,Na)2(Mg,Fe,Al)5((Si,Al)8O22)(OH,F,Cl,O)2 |
Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Pronunciation of Peralkaline rhyolite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon & Katya Ralph | United Kingdom |
Synonyms of Peralkaline rhyolite
Internet Links for Peralkaline rhyolite
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https://www.mindat.org/min-48453.html
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