Peralkaline trachyte
A rock subtype
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A trachyte containing alkali pyroxenes or amphiboles, or with (Na2O+K2O)>Al2O3.
Unique Identifiers
Mindat ID:
48479
Long-form identifier:
mindat:1:1:48479:4
GUID
(UUID V4):
(UUID V4):
5e5e41fd-10c3-4488-b62c-6d6444129c24
Classification of Peralkaline trachyte
Trachyte appears in field 7 in the QAPF diagram.
Trachyte is found in field T in the TAS diagram.
Sub-divisions of Peralkaline trachyte
- Peralkaline trachyte
Mineralogy of Peralkaline trachyte
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. |
Feldspar > Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole | (Na, K, ◻)(Ca,Na)2(Mg,Fe,Al)5((Si,Al)8O22)(OH,F,Cl,O)2 |
Pyroxene | A petrological term for Pyroxene Group. |
Synonyms of Peralkaline trachyte
Internet Links for Peralkaline trachyte
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References for Peralkaline trachyte
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